695 lines
25 KiB
JavaScript
695 lines
25 KiB
JavaScript
/**
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* Dog Calorie Calculator Widget
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* Embeddable JavaScript widget for calculating dog's daily calorie requirements
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* by Canine Nutrition and Wellness - https://caninenutritionandwellness.com
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*
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* Usage:
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* <script src="https://yourdomain.com/dog-calculator-widget.js"></script>
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* <div id="dog-calorie-calculator"></div>
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*/
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(function() {
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'use strict';
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// Widget styles - Using Shadow DOM for better isolation where supported
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const widgetStyles = `
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.dog-calc-widget {
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max-width: 600px;
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margin: 0 auto;
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padding: 24px;
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font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
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line-height: 1.5;
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color: #6f3f6d;
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box-sizing: border-box;
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}
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.dog-calc-widget *,
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.dog-calc-widget *::before,
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.dog-calc-widget *::after {
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box-sizing: border-box;
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}
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.dog-calc-section {
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background: #fdfcfe;
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border: 1px solid #e8e3ed;
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border-radius: 8px;
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padding: 24px;
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margin-bottom: 24px;
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box-shadow: 0 3px 6px rgba(0, 0, 0, 0.08);
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}
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.dog-calc-section h2 {
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margin-top: 0;
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margin-bottom: 24px;
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color: #6f3f6d;
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font-size: 1.5rem;
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font-weight: 600;
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}
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.dog-calc-form-group {
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margin-bottom: 20px;
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}
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.dog-calc-form-group label {
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display: block;
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margin-bottom: 8px;
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font-weight: 500;
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color: #6f3f6d;
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font-size: 1rem;
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}
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.dog-calc-form-group select,
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.dog-calc-form-group input[type="number"],
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.dog-calc-form-group input[type="text"] {
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width: 100%;
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padding: 12px 16px;
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border: 1px solid #e8e3ed;
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border-radius: 6px;
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font-size: 1rem;
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font-family: inherit;
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background-color: #ffffff;
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color: #6f3f6d;
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transition: all 0.2s ease;
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-webkit-appearance: none;
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-moz-appearance: none;
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appearance: none;
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background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236f3f6d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
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background-repeat: no-repeat;
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background-position: right 12px center;
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background-size: 20px;
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padding-right: 40px;
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}
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.dog-calc-form-group select option {
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background-color: #ffffff;
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color: #6f3f6d;
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}
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.dog-calc-form-group input[type="number"],
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.dog-calc-form-group input[type="text"] {
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background-image: none;
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padding-right: 16px;
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}
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.dog-calc-form-group select:focus,
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.dog-calc-form-group input[type="number"]:focus,
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.dog-calc-form-group input[type="text"]:focus {
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outline: none;
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border-color: #f19a5f;
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background-color: #ffffff;
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box-shadow: 0 0 0 3px rgba(241, 154, 95, 0.1);
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}
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.dog-calc-form-group input[readonly] {
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background-color: #f8f5fa;
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cursor: not-allowed;
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color: #635870;
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}
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.dog-calc-results {
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background: linear-gradient(135deg, rgba(241, 154, 95, 0.08) 0%, rgba(241, 154, 95, 0.04) 100%);
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border: 1px solid rgba(241, 154, 95, 0.2);
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border-radius: 6px;
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padding: 20px;
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margin-top: 24px;
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}
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.dog-calc-result-item {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: 12px;
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}
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.dog-calc-result-item:last-child {
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margin-bottom: 0;
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}
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.dog-calc-result-label {
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font-weight: 500;
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color: #6f3f6d;
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font-size: 0.95rem;
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}
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.dog-calc-result-value {
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font-weight: 600;
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color: #6f3f6d;
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font-size: 1.1rem;
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padding: 4px 12px;
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background: rgba(241, 154, 95, 0.15);
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border-radius: 4px;
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}
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.dog-calc-collapsible {
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background: #ffffff;
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border: 1px solid #e8e3ed;
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border-radius: 8px;
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margin-bottom: 24px;
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overflow: hidden;
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box-shadow: 0 3px 6px rgba(0, 0, 0, 0.08);
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}
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.dog-calc-collapsible-header {
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background: #f8f5fa;
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padding: 20px 24px;
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cursor: pointer;
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user-select: none;
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display: flex;
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justify-content: space-between;
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align-items: center;
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border-bottom: 1px solid #e8e3ed;
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transition: background-color 0.2s ease;
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}
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.dog-calc-collapsible-header:hover {
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background: #f5f1f6;
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}
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.dog-calc-collapsible-header h3 {
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margin: 0;
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font-size: 1.25rem;
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color: #6f3f6d;
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font-weight: 600;
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}
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.dog-calc-collapsible-arrow {
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transition: transform 0.2s ease;
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font-size: 1.2rem;
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color: #9f5999;
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}
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.dog-calc-collapsible.active .dog-calc-collapsible-arrow {
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transform: rotate(180deg);
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}
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.dog-calc-collapsible-content {
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max-height: 0;
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overflow: hidden;
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transition: max-height 0.3s ease;
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}
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.dog-calc-collapsible.active .dog-calc-collapsible-content {
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max-height: 1000px;
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}
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.dog-calc-collapsible-inner {
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padding: 24px;
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}
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.dog-calc-input-group {
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display: flex;
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gap: 16px;
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align-items: flex-end;
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}
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.dog-calc-input-group .dog-calc-form-group {
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flex: 1;
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margin-bottom: 0;
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}
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.dog-calc-unit-select {
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min-width: 120px;
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}
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.dog-calc-error {
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color: #e87159;
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font-size: 0.875rem;
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margin-top: 6px;
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font-weight: 500;
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}
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.dog-calc-hidden {
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display: none !important;
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}
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.dog-calc-footer {
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text-align: center;
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padding: 16px 0;
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border-top: 1px solid #e8e3ed;
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margin-top: 24px;
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}
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.dog-calc-footer a {
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color: #9f5999;
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text-decoration: none;
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font-size: 0.9rem;
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font-weight: 500;
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transition: color 0.2s ease;
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}
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.dog-calc-footer a:hover {
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color: #f19a5f;
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text-decoration: underline;
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}
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@media (max-width: 576px) {
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.dog-calc-widget {
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padding: 16px;
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}
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.dog-calc-section,
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.dog-calc-collapsible-inner {
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padding: 20px;
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}
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.dog-calc-section h2,
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.dog-calc-collapsible-header h3 {
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font-size: 1.3rem;
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}
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.dog-calc-input-group {
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flex-direction: column;
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gap: 20px;
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}
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.dog-calc-input-group .dog-calc-form-group {
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margin-bottom: 20px;
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}
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.dog-calc-result-item {
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flex-direction: column;
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align-items: flex-start;
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gap: 8px;
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}
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.dog-calc-result-value {
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align-self: stretch;
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text-align: center;
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}
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.dog-calc-collapsible-header {
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padding: 16px 20px;
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}
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}
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@media (prefers-color-scheme: dark) {
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.dog-calc-widget {
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color: #f5f3f7;
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}
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.dog-calc-section,
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.dog-calc-collapsible {
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background: #24202d;
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border-color: #433c4f;
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}
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.dog-calc-collapsible-header {
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background: #312b3b;
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border-color: #433c4f;
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}
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.dog-calc-collapsible-header:hover {
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background: #3a3446;
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}
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.dog-calc-section h2,
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.dog-calc-collapsible-header h3,
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.dog-calc-form-group label,
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.dog-calc-result-label {
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color: #f5f3f7;
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}
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.dog-calc-form-group select,
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.dog-calc-form-group input[type="number"],
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.dog-calc-form-group input[type="text"] {
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background-color: #312b3b;
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border-color: #433c4f;
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color: #f5f3f7;
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background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23f5f3f7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
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}
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.dog-calc-form-group select option {
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background-color: #312b3b;
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color: #f5f3f7;
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}
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.dog-calc-form-group select:focus,
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.dog-calc-form-group input[type="number"]:focus,
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.dog-calc-form-group input[type="text"]:focus {
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background-color: #312b3b;
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border-color: #f19a5f;
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}
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.dog-calc-form-group input[readonly] {
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background-color: #433c4f;
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color: #b8b0c2;
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}
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.dog-calc-results {
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background: linear-gradient(135deg, rgba(241, 154, 95, 0.15) 0%, rgba(241, 154, 95, 0.08) 100%);
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border-color: rgba(241, 154, 95, 0.3);
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}
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.dog-calc-result-value {
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color: #f5f3f7;
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background: rgba(241, 154, 95, 0.2);
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}
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.dog-calc-footer {
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border-color: #433c4f;
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}
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}
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`;
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// Widget HTML template
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const widgetTemplate = `
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<div class="dog-calc-widget">
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<div class="dog-calc-section">
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<h2>Dog's Characteristics</h2>
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<div class="dog-calc-form-group">
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<label for="dogType">Dog Type / Activity Level:</label>
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<select id="dogType" aria-describedby="dogTypeHelp">
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<option value="">Select dog type...</option>
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<option value="3.0">Puppy (0-4 months)</option>
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<option value="2.0">Puppy (4 months - adult)</option>
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<option value="1.2">Adult - inactive/obese</option>
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<option value="1.6">Adult (neutered/spayed) - average activity</option>
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<option value="1.8">Adult (intact) - average activity</option>
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<option value="1.0">Adult - weight loss</option>
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<option value="1.7">Adult - weight gain</option>
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<option value="2.0">Working dog - light work</option>
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<option value="3.0">Working dog - moderate work</option>
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<option value="5.0">Working dog - heavy work</option>
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<option value="1.1">Senior dog</option>
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</select>
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</div>
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<div class="dog-calc-form-group">
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<label for="weight">Dog's Weight (kg):</label>
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<input type="number" id="weight" min="0.1" step="0.1" placeholder="Enter weight in kg" aria-describedby="weightHelp">
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<div id="weightError" class="dog-calc-error dog-calc-hidden">Please enter a valid weight (minimum 0.1 kg)</div>
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</div>
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<div class="dog-calc-results" id="calorieResults" style="display: none;">
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<div class="dog-calc-result-item">
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<span class="dog-calc-result-label">Resting Energy Requirement (RER):</span>
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<span class="dog-calc-result-value" id="rerValue">- cal/day</span>
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</div>
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<div class="dog-calc-result-item">
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<span class="dog-calc-result-label">Maintenance Energy Requirement (MER):</span>
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<span class="dog-calc-result-value" id="merValue">- cal/day</span>
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</div>
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</div>
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</div>
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<div class="dog-calc-collapsible" id="foodCalculator">
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<div class="dog-calc-collapsible-header">
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<h3>How much food is that?</h3>
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<span class="dog-calc-collapsible-arrow">▼</span>
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</div>
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<div class="dog-calc-collapsible-content">
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<div class="dog-calc-collapsible-inner">
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<div class="dog-calc-form-group">
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<label for="foodEnergy">Food Energy Content (kcal/100g):</label>
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<input type="number" id="foodEnergy" min="1" step="1" placeholder="Enter kcal per 100g" aria-describedby="foodEnergyHelp">
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<div id="foodEnergyError" class="dog-calc-error dog-calc-hidden">Please enter a valid energy content (minimum 1 kcal/100g)</div>
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</div>
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<div class="dog-calc-results" id="dailyFoodResults" style="display: none;">
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<div class="dog-calc-result-item">
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<span class="dog-calc-result-label">Daily Food Amount:</span>
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<span class="dog-calc-result-value" id="dailyFoodValue">- g/day</span>
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</div>
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</div>
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<div class="dog-calc-form-group" style="margin-top: 20px;">
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<label for="days">Number of Days:</label>
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<input type="number" id="days" min="1" step="1" value="1" placeholder="Enter number of days" aria-describedby="daysHelp">
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<div id="daysError" class="dog-calc-error dog-calc-hidden">Please enter a valid number of days (minimum 1)</div>
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</div>
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<div class="dog-calc-input-group">
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<div class="dog-calc-form-group">
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<label for="totalFoodDisplay">Total Food Amount:</label>
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<input type="text" id="totalFoodDisplay" readonly>
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</div>
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<div class="dog-calc-form-group">
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<label for="unit">Unit:</label>
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<select id="unit" class="dog-calc-unit-select" aria-describedby="unitHelp">
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<option value="g">grams (g)</option>
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<option value="kg">kilograms (kg)</option>
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<option value="oz">ounces (oz)</option>
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<option value="lb">pounds (lb)</option>
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</select>
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</div>
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</div>
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</div>
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</div>
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</div>
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<div class="dog-calc-footer">
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<a href="https://caninenutritionandwellness.com" target="_blank" rel="noopener noreferrer">
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by caninenutritionandwellness.com
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</a>
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</div>
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</div>
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`;
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// Calculator class
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class DogCalorieCalculatorWidget {
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constructor(container) {
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this.container = container;
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this.currentMER = 0;
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this.init();
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}
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init() {
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this.injectStyles();
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this.injectHTML();
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this.bindEvents();
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}
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injectStyles() {
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if (!document.getElementById('dog-calc-widget-styles')) {
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const style = document.createElement('style');
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style.id = 'dog-calc-widget-styles';
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style.textContent = widgetStyles;
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document.head.appendChild(style);
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}
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}
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injectHTML() {
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this.container.innerHTML = widgetTemplate;
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}
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bindEvents() {
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const weightInput = this.container.querySelector('#weight');
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const dogTypeSelect = this.container.querySelector('#dogType');
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const foodEnergyInput = this.container.querySelector('#foodEnergy');
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const daysInput = this.container.querySelector('#days');
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const unitSelect = this.container.querySelector('#unit');
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const collapsibleHeader = this.container.querySelector('.dog-calc-collapsible-header');
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if (weightInput) {
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weightInput.addEventListener('input', () => this.updateCalorieCalculations());
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weightInput.addEventListener('blur', () => this.validateWeight());
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}
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if (dogTypeSelect) dogTypeSelect.addEventListener('change', () => this.updateCalorieCalculations());
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if (foodEnergyInput) {
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foodEnergyInput.addEventListener('input', () => this.updateFoodCalculations());
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foodEnergyInput.addEventListener('blur', () => this.validateFoodEnergy());
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}
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if (daysInput) {
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daysInput.addEventListener('input', () => this.updateFoodCalculations());
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daysInput.addEventListener('blur', () => this.validateDays());
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}
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if (unitSelect) unitSelect.addEventListener('change', () => this.updateFoodCalculations());
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if (collapsibleHeader) {
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collapsibleHeader.addEventListener('click', () => this.toggleCollapsible());
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}
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}
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toggleCollapsible() {
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const collapsible = this.container.querySelector('.dog-calc-collapsible');
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if (collapsible) {
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collapsible.classList.toggle('active');
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}
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}
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calculateRER(weightKg) {
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return 70 * Math.pow(weightKg, 0.75);
|
|
}
|
|
|
|
calculateMER(rer, factor) {
|
|
return rer * factor;
|
|
}
|
|
|
|
validateInput(value, min = 0, isInteger = false) {
|
|
const num = parseFloat(value);
|
|
if (isNaN(num) || num < min) return false;
|
|
if (isInteger && !Number.isInteger(num)) return false;
|
|
return true;
|
|
}
|
|
|
|
showError(elementId, show = true) {
|
|
const errorElement = this.container.querySelector('#' + elementId);
|
|
if (errorElement) {
|
|
if (show) {
|
|
errorElement.classList.remove('dog-calc-hidden');
|
|
} else {
|
|
errorElement.classList.add('dog-calc-hidden');
|
|
}
|
|
}
|
|
}
|
|
|
|
convertUnits(grams, unit) {
|
|
switch (unit) {
|
|
case 'kg': return grams / 1000;
|
|
case 'oz': return grams / 28.3495;
|
|
case 'lb': return grams / 453.592;
|
|
default: return grams;
|
|
}
|
|
}
|
|
|
|
formatNumber(num, decimals = 0) {
|
|
return num.toFixed(decimals).replace(/\.?0+$/, '');
|
|
}
|
|
|
|
validateWeight() {
|
|
const weight = this.container.querySelector('#weight')?.value;
|
|
if (weight && !this.validateInput(weight, 0.1)) {
|
|
this.showError('weightError', true);
|
|
} else {
|
|
this.showError('weightError', false);
|
|
}
|
|
}
|
|
|
|
validateFoodEnergy() {
|
|
const energy = this.container.querySelector('#foodEnergy')?.value;
|
|
if (energy && !this.validateInput(energy, 1)) {
|
|
this.showError('foodEnergyError', true);
|
|
} else {
|
|
this.showError('foodEnergyError', false);
|
|
}
|
|
}
|
|
|
|
validateDays() {
|
|
const days = this.container.querySelector('#days')?.value;
|
|
if (days && !this.validateInput(days, 1, true)) {
|
|
this.showError('daysError', true);
|
|
} else {
|
|
this.showError('daysError', false);
|
|
}
|
|
}
|
|
|
|
updateCalorieCalculations() {
|
|
const weightInput = this.container.querySelector('#weight');
|
|
const dogTypeSelect = this.container.querySelector('#dogType');
|
|
const calorieResults = this.container.querySelector('#calorieResults');
|
|
const rerValue = this.container.querySelector('#rerValue');
|
|
const merValue = this.container.querySelector('#merValue');
|
|
|
|
if (!weightInput || !dogTypeSelect || !calorieResults || !rerValue || !merValue) {
|
|
return;
|
|
}
|
|
|
|
const weight = weightInput.value;
|
|
const dogTypeFactor = dogTypeSelect.value;
|
|
|
|
this.showError('weightError', false);
|
|
|
|
if (!weight || !this.validateInput(weight, 0.1)) {
|
|
if (weight) this.showError('weightError', true);
|
|
calorieResults.style.display = 'none';
|
|
return;
|
|
}
|
|
|
|
if (!dogTypeFactor) {
|
|
calorieResults.style.display = 'none';
|
|
return;
|
|
}
|
|
|
|
const weightKg = parseFloat(weight);
|
|
const factor = parseFloat(dogTypeFactor);
|
|
|
|
const rer = this.calculateRER(weightKg);
|
|
const mer = this.calculateMER(rer, factor);
|
|
|
|
this.currentMER = mer;
|
|
|
|
rerValue.textContent = this.formatNumber(rer, 0) + ' cal/day';
|
|
merValue.textContent = this.formatNumber(mer, 0) + ' cal/day';
|
|
calorieResults.style.display = 'block';
|
|
|
|
this.updateFoodCalculations();
|
|
}
|
|
|
|
updateFoodCalculations() {
|
|
if (this.currentMER === 0) return;
|
|
|
|
const foodEnergyInput = this.container.querySelector('#foodEnergy');
|
|
const daysInput = this.container.querySelector('#days');
|
|
const unitSelect = this.container.querySelector('#unit');
|
|
const dailyFoodResults = this.container.querySelector('#dailyFoodResults');
|
|
const dailyFoodValue = this.container.querySelector('#dailyFoodValue');
|
|
const totalFoodDisplay = this.container.querySelector('#totalFoodDisplay');
|
|
|
|
if (!foodEnergyInput || !daysInput || !unitSelect || !dailyFoodResults || !dailyFoodValue || !totalFoodDisplay) {
|
|
return;
|
|
}
|
|
|
|
const foodEnergy = foodEnergyInput.value;
|
|
const days = daysInput.value;
|
|
const unit = unitSelect.value;
|
|
|
|
this.showError('foodEnergyError', false);
|
|
this.showError('daysError', false);
|
|
|
|
if (!foodEnergy || !this.validateInput(foodEnergy, 1)) {
|
|
if (foodEnergy) this.showError('foodEnergyError', true);
|
|
dailyFoodResults.style.display = 'none';
|
|
totalFoodDisplay.value = '';
|
|
return;
|
|
}
|
|
|
|
if (!days || !this.validateInput(days, 1, true)) {
|
|
if (days) this.showError('daysError', true);
|
|
totalFoodDisplay.value = '';
|
|
return;
|
|
}
|
|
|
|
const energyPer100g = parseFloat(foodEnergy);
|
|
const numDays = parseInt(days);
|
|
|
|
const dailyFoodGrams = (this.currentMER / energyPer100g) * 100;
|
|
const totalFoodGrams = dailyFoodGrams * numDays;
|
|
|
|
dailyFoodValue.textContent = this.formatNumber(dailyFoodGrams, 1) + ' g/day';
|
|
dailyFoodResults.style.display = 'block';
|
|
|
|
const convertedAmount = this.convertUnits(totalFoodGrams, unit);
|
|
const unitLabel = unit === 'g' ? 'g' : unit === 'kg' ? 'kg' : unit === 'oz' ? 'oz' : 'lb';
|
|
const decimals = unit === 'g' ? 0 : unit === 'kg' ? 2 : 1;
|
|
|
|
totalFoodDisplay.value = this.formatNumber(convertedAmount, decimals) + ' ' + unitLabel;
|
|
}
|
|
}
|
|
|
|
// Auto-initialize widget
|
|
function initDogCalorieCalculator() {
|
|
const containers = document.querySelectorAll('#dog-calorie-calculator, .dog-calorie-calculator');
|
|
containers.forEach(container => {
|
|
if (!container.dataset.initialized) {
|
|
new DogCalorieCalculatorWidget(container);
|
|
container.dataset.initialized = 'true';
|
|
}
|
|
});
|
|
}
|
|
|
|
// Initialize when DOM is ready
|
|
if (document.readyState === 'loading') {
|
|
document.addEventListener('DOMContentLoaded', initDogCalorieCalculator);
|
|
} else {
|
|
initDogCalorieCalculator();
|
|
}
|
|
|
|
// Expose for manual initialization
|
|
window.DogCalorieCalculatorWidget = DogCalorieCalculatorWidget;
|
|
|
|
})(); |