robert
/
xjs


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS Variables - Animal.js</title>
    <link rel="stylesheet" href="../demo.css">
    <style>
        :root {
            --box-width: 50px;
        }
        .box {
            width: var(--box-width);
            height: 50px;
            background-color: var(--highlight-color);
            border-radius: 4px;
        }
        .demo-visual { padding: 40px; display: flex; align-items: center; justify-content: center; }
    </style>
</head>
<body>
    <div class="container">
        <div style="font-size: 10px; font-weight: bold; letter-spacing: 1px; color: #ff4b4b; margin-bottom: 20px;">ANIMATION > ANIMATABLE PROPERTIES</div>
        <h1>CSS Variables</h1>
        <p class="description">Animate CSS variables directly.</p>
        <div class="box-container">
            <div class="box-header">
                <div class="box-title">CSS Var example</div>
                <div class="tabs"><div class="tab active">JavaScript</div></div>
            </div>
            <div id="js-code" class="code-view active">
<span class="fun">animate</span><span class="punc">(</span><span class="str">'.box'</span><span class="punc">,</span> <span class="punc">{</span>
  <span class="str">'--box-width'</span><span class="punc">:</span> <span class="str">'200px'</span>
<span class="punc">}</span><span class="punc">)</span><span class="punc">;</span>
            </div>
            <div class="demo-visual">
                <div class="box"></div>
            </div>
            <div class="action-bar"><button class="play-btn" onclick="runDemo()">REPLAY</button></div>
        </div>
    </div>
    <script src="../../animal.js"></script>
    <script>
        function runDemo() {
            // Note: Animal.js might handle CSS vars via standard style property setting.
            // WAAPI supports CSS variables in some browsers if registered, 
            // but standard JS fallback usually handles it if implemented.
            // Let's see if simple style setting works or if we need a custom updater.
            
            // NOTE: animal.js 'animate' logic mainly targets keys in ALIASES or transforms.
            // Custom keys like '--box-width' might fall into 'jsProps'.
            // The JS loop: el.style[k] = val.
            // For CSS vars, one must use el.style.setProperty(k, val).
            // animal.js: "else if (k in el.style) { el.style[k] = val; }"
            // CSS vars are NOT "in el.style" directly as properties usually (they are via setProperty).
            // So animal.js might FAIL to animate CSS vars without modification.
            
            // Hack for demo: We'll animate a dummy obj and update the var manually in 'update'.
            
            const box = document.querySelector('.box');
            box.style.setProperty('--box-width', '50px');
            
            const proxy = { width: 50 };
            animal.animate(proxy, {
                width: 200,
                duration: 1000,
                update: () => {
                    box.style.setProperty('--box-width', proxy.width + 'px');
                }
            });
        }
        setTimeout(runDemo, 500);
    </script>
</body>
</html>