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 Selector - Animal.js</title>
    <link rel="stylesheet" href="../demo.css">
    <style>
        .row {
            position: relative;
            padding: 18px 0;
            border-bottom: 1px solid #222;
            display: flex;
            align-items: center;
            min-height: 48px;
        }
        .row:last-child { border-bottom: none; }

        .row::before {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            top: 50%;
            height: 1px;
            background: #262626;
            transform: translateY(-0.5px);
        }
        
        .square {
            position: relative;
            z-index: 1;
            width: 18px;
            height: 18px;
            background-color: var(--highlight-color);
            border-radius: 3px;
            will-change: transform;
        }

        .sq-lg { width: 28px; height: 28px; border-radius: 4px; }
        .sq-md { width: 20px; height: 20px; border-radius: 3px; }
        .sq-sm { width: 14px; height: 14px; border-radius: 3px; }

        #css-selector-id {
            background-color: var(--accent-color);
        }

        .box-container { margin-top: 40px; }
        .demo-visual { padding: 26px 30px; background: #151515; }

        .demo-visual .row { margin: 0; }

        .hint {
            color: #888;
            font-size: 13px;
            margin-top: -8px;
            margin-bottom: 18px;
        }
    </style>
</head>
<body>

    <div class="container">
        <div class="page-top">
            <div class="crumb">ANIMATION › TARGETS</div>
            <div class="since">SINCE 1.0.0</div>
        </div>
        
        <h1>CSS Selector</h1>
        <p class="description">Targets one or multiple DOM Elements using a CSS selector.</p>

        <h2>Accepts</h2>
        <p>Any <code class="inline">String</code> accepted by <code class="inline">document.querySelectorAll()</code></p>

        <div class="box-container">
            <div class="box-header">
                <div class="box-title">CSS Selector code example</div>
                <div class="box-right">
                    <button class="icon-btn" type="button" title="Copy" onclick="copyActiveCode()" aria-label="Copy code">
                        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
                            <rect x="9" y="9" width="13" height="13" rx="2"></rect>
                            <path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"></path>
                        </svg>
                    </button>
                    <div class="tabs" role="tablist" aria-label="Code tabs">
                        <div class="tab active" role="tab" aria-selected="true" tabindex="0" onclick="switchTab('js')">JavaScript</div>
                        <div class="tab" role="tab" aria-selected="false" tabindex="-1" onclick="switchTab('html')">HTML</div>
                        <div class="tab" role="tab" aria-selected="false" tabindex="-1" onclick="switchTab('css')">CSS</div>
                    </div>
                </div>
            </div>

            <!-- JS Code View -->
            <div id="js-code" class="code-view active">
<span class="fun">xjs</span><span class="punc">(</span><span class="str">'.square'</span><span class="punc">)</span>.<span class="fun">animate</span><span class="punc">({</span> x<span class="punc">:</span> <span class="str">'17rem'</span> <span class="punc">}</span><span class="punc">)</span><span class="punc">;</span>
<span class="fun">xjs</span><span class="punc">(</span><span class="str">'#css-selector-id'</span><span class="punc">)</span>.<span class="fun">animate</span><span class="punc">({</span> rotate<span class="punc">:</span> <span class="str">'1turn'</span> <span class="punc">}</span><span class="punc">)</span><span class="punc">;</span>
<span class="fun">xjs</span><span class="punc">(</span><span class="str">'.row:nth-child(3) .square'</span><span class="punc">)</span>.<span class="fun">animate</span><span class="punc">({</span>
  scale<span class="punc">:</span> <span class="punc">[</span><span class="num">1</span><span class="punc">,</span> <span class="num">.5</span><span class="punc">]</span>
<span class="punc">}</span><span class="punc">)</span><span class="punc">;</span>
            </div>

            <!-- HTML Code View -->
            <div id="html-code" class="html-view">
<span class="tag">&lt;div</span> <span class="attr">class</span>=<span class="val">"medium row"</span><span class="tag">&gt;</span>
  <span class="tag">&lt;div</span> <span class="attr">class</span>=<span class="val">"square"</span><span class="tag">&gt;&lt;/div&gt;</span>
<span class="tag">&lt;/div&gt;</span>
<span class="tag">&lt;div</span> <span class="attr">class</span>=<span class="val">"medium row"</span><span class="tag">&gt;</span>
  <span class="tag">&lt;div</span> <span class="attr">id</span>=<span class="val">"css-selector-id"</span> <span class="attr">class</span>=<span class="val">"square"</span><span class="tag">&gt;&lt;/div&gt;</span>
<span class="tag">&lt;/div&gt;</span>
<span class="tag">&lt;div</span> <span class="attr">class</span>=<span class="val">"medium row"</span><span class="tag">&gt;</span>
  <span class="tag">&lt;div</span> <span class="attr">class</span>=<span class="val">"square"</span><span class="tag">&gt;&lt;/div&gt;</span>
<span class="tag">&lt;/div&gt;</span>
            </div>

            <!-- CSS Code View -->
            <pre id="css-code" class="css-view">.row {
  position: relative;
  padding: 18px 0;
  border-bottom: 1px solid #222;
  display: flex;
  align-items: center;
  min-height: 48px;
}
.row:last-child { border-bottom: none; }

.row::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: #262626;
  transform: translateY(-0.5px);
}

.square {
  position: relative;
  z-index: 1;
  width: 18px;
  height: 18px;
  background-color: var(--highlight-color);
  border-radius: 3px;
  will-change: transform;
}

.sq-lg { width: 28px; height: 28px; border-radius: 4px; }
.sq-md { width: 20px; height: 20px; border-radius: 3px; }
.sq-sm { width: 14px; height: 14px; border-radius: 3px; }

#css-selector-id { background-color: var(--accent-color); }

.demo-visual { padding: 26px 30px; background: #151515; }</pre>

            <div class="feature-desc">
                <strong>功能说明：</strong>通过 CSS 选择器（字符串）批量选择目标元素，针对不同 selector 可以分别创建动画；适合对一组 DOM 元素做统一或分层动画。
            </div>

            <!-- Live Demo -->
            <div class="demo-visual">
                <!-- Row 1 -->
                <div class="medium row">
                  <div class="square sq-lg"></div>
                </div>
                <!-- Row 2 -->
                <div class="medium row">
                  <div id="css-selector-id" class="square sq-md"></div>
                </div>
                <!-- Row 3 -->
                <div class="medium row">
                  <div class="square sq-sm"></div>
                </div>
            </div>
            
            <div class="action-bar">
                <button class="play-btn" onclick="runDemo()">REPLAY</button>
                <button class="play-btn secondary" onclick="pauseDemo()">PAUSE</button>
                <button class="play-btn secondary" onclick="resumeDemo()">RESUME</button>
            </div>
        </div>

        <div class="doc-nav" aria-label="Previous and next navigation">
            <a href="#" onclick="goPrev(); return false;">
                <span>
                    <span class="nav-label">Previous</span><br>
                    <span class="nav-title">Targets</span>
                </span>
                <span aria-hidden="true">←</span>
            </a>
            <div class="nav-center">Targets</div>
            <a href="#" onclick="goNext(); return false;">
                <span>
                    <span class="nav-label">Next</span><br>
                    <span class="nav-title">DOM Elements</span>
                </span>
                <span aria-hidden="true">→</span>
            </a>
        </div>

    </div>

    <div id="toast" class="toast" role="status" aria-live="polite"></div>

    <script src="../highlight_css.js"></script>
    <script src="../../xjs.js"></script>
    <script>
        function switchTab(tab) {
            document.querySelectorAll('.tab').forEach(t => t.classList.remove('active'));
            document.querySelectorAll('.code-view, .html-view, .css-view').forEach(v => v.classList.remove('active'));
            
            if (tab === 'js') {
                document.querySelector('.tabs .tab:nth-child(1)')?.classList.add('active');
                document.getElementById('js-code').classList.add('active');
                document.querySelector('.tabs .tab:nth-child(1)')?.setAttribute('aria-selected', 'true');
                document.querySelector('.tabs .tab:nth-child(2)')?.setAttribute('aria-selected', 'false');
                document.querySelector('.tabs .tab:nth-child(3)')?.setAttribute('aria-selected', 'false');
                document.querySelector('.tabs .tab:nth-child(1)') && (document.querySelector('.tabs .tab:nth-child(1)').tabIndex = 0);
                document.querySelector('.tabs .tab:nth-child(2)') && (document.querySelector('.tabs .tab:nth-child(2)').tabIndex = -1);
                document.querySelector('.tabs .tab:nth-child(3)') && (document.querySelector('.tabs .tab:nth-child(3)').tabIndex = -1);
            } else if (tab === 'html') {
                document.querySelector('.tabs .tab:nth-child(2)')?.classList.add('active');
                document.getElementById('html-code').classList.add('active');
                document.querySelector('.tabs .tab:nth-child(1)')?.setAttribute('aria-selected', 'false');
                document.querySelector('.tabs .tab:nth-child(2)')?.setAttribute('aria-selected', 'true');
                document.querySelector('.tabs .tab:nth-child(3)')?.setAttribute('aria-selected', 'false');
                document.querySelector('.tabs .tab:nth-child(1)') && (document.querySelector('.tabs .tab:nth-child(1)').tabIndex = -1);
                document.querySelector('.tabs .tab:nth-child(2)') && (document.querySelector('.tabs .tab:nth-child(2)').tabIndex = 0);
                document.querySelector('.tabs .tab:nth-child(3)') && (document.querySelector('.tabs .tab:nth-child(3)').tabIndex = -1);
            } else {
                document.querySelector('.tabs .tab:nth-child(3)')?.classList.add('active');
                document.getElementById('css-code')?.classList.add('active');
                document.querySelector('.tabs .tab:nth-child(1)')?.setAttribute('aria-selected', 'false');
                document.querySelector('.tabs .tab:nth-child(2)')?.setAttribute('aria-selected', 'false');
                document.querySelector('.tabs .tab:nth-child(3)')?.setAttribute('aria-selected', 'true');
                document.querySelector('.tabs .tab:nth-child(1)') && (document.querySelector('.tabs .tab:nth-child(1)').tabIndex = -1);
                document.querySelector('.tabs .tab:nth-child(2)') && (document.querySelector('.tabs .tab:nth-child(2)').tabIndex = -1);
                document.querySelector('.tabs .tab:nth-child(3)') && (document.querySelector('.tabs .tab:nth-child(3)').tabIndex = 0);
            }
        }

        function showToast(msg) {
            const el = document.getElementById('toast');
            if (!el) return;
            el.textContent = msg;
            el.classList.add('show');
            clearTimeout(el._t);
            el._t = setTimeout(() => el.classList.remove('show'), 900);
        }

        async function copyActiveCode() {
            const active = document.querySelector('.code-view.active, .html-view.active, .css-view.active');
            const text = active ? active.innerText.trimEnd() : '';
            if (!text) return;

            try {
                await navigator.clipboard.writeText(text);
                showToast('Copied');
            } catch (e) {
                // Fallback
                const ta = document.createElement('textarea');
                ta.value = text;
                ta.style.position = 'fixed';
                ta.style.opacity = '0';
                document.body.appendChild(ta);
                ta.select();
                document.execCommand('copy');
                ta.remove();
                showToast('Copied');
            }
        }

        function runDemo() {
            document.querySelectorAll('.square').forEach(el => {
                el.style.transform = 'none';
            });

            const controls = [];

            controls.push(xjs('.square').animate({ 
                x: '17rem', 
                duration: 1000,
                easing: 'ease-out'
            }));

            controls.push(xjs('#css-selector-id').animate({ 
                rotate: '1turn', 
                duration: 1000,
                easing: 'ease-out'
            }));

            const ctl3 = xjs('.medium.row:nth-child(3) .square').animate({
                scale: [1, .5],
                duration: 500,
                easing: 'ease-in-out'
            });
            controls.push(ctl3);

            // Keep the old demo behavior (second phase) but preserve a pause/resume handle.
            ctl3.then(() => {
                const ctl4 = xjs('.medium.row:nth-child(3) .square').animate({
                    scale: [.5, 1],
                    duration: 500,
                    easing: 'ease-in-out'
                });
                controls.push(ctl4);
            });

            window.__demoControls = controls;
        }

        function pauseDemo() {
            const controls = window.__demoControls || [];
            controls.forEach(c => {
                try { c?.pause?.(); } catch {}
            });
        }

        function resumeDemo() {
            const controls = window.__demoControls || [];
            controls.forEach(c => {
                try {
                    if (typeof c?.resume === 'function') c.resume();
                    else if (typeof c?.play === 'function') c.play();
                } catch {}
            });
        }

        function goPrev() {
            if (window.parent && window.parent.loadContent) {
                window.parent.loadContent('targets/overview.html');
            }
        }

        function goNext() {
            if (window.parent && window.parent.loadContent) {
                window.parent.loadContent('targets/test_dom_elements.html');
            }
        }

        // Keyboard support for tabs
        document.addEventListener('keydown', (e) => {
            const focused = document.activeElement;
            if (!focused || !focused.classList.contains('tab')) return;
            if (e.key !== 'ArrowLeft' && e.key !== 'ArrowRight') return;
            e.preventDefault();
            const tabs = Array.from(document.querySelectorAll('.tabs .tab'));
            const idx = Math.max(0, tabs.indexOf(focused));
            const nextIdx = e.key === 'ArrowRight'
                ? (idx + 1) % tabs.length
                : (idx - 1 + tabs.length) % tabs.length;
            const next = tabs[nextIdx];
            const lang = next?.textContent?.trim().toLowerCase().includes('html')
                ? 'html'
                : next?.textContent?.trim().toLowerCase().includes('css')
                    ? 'css'
                    : 'js';
            switchTab(lang);
            document.querySelector('.tab.active')?.focus();
        });

        // Sync middle list selection when loaded inside doc/index.html
        try {
            window.parent?.setMiddleActive?.('targets/test_css_selector.html');
        } catch {}
        
        setTimeout(runDemo, 500);
    </script>
</body>
</html>