\u4e00\u4e2a\u5f00\u5173\u6309\u94ae\u7684\u52a8\u6548\u2014\u2014\u56fe\u6807\u4ece\u5706\u5708\u53d8\u4e3a\u5bf9\u52fe，\u80cc\u666f\u8272\u4ece\u7070\u8272\u8fc7\u6e21\u5230\u7eff\u8272，\u540c\u65f6\u5f39\u51fa\u4e00\u4e2a\u5fae\u5c0f\u7c92\u5b50\u6269\u6563\u3002\u8bbe\u8ba1\u7a3f\u4e0a\u6807\u6ce8\u7684\u662f"300ms，ease-out"\u3002\u5b9e\u73b0\u540e，\u5728 iPhone 15 Pro \u4e0a\u4e1d\u6ed1\u6d41\u7545，\u5728 Redmi Note 11 \u4e0a\u5361\u4e86 200ms\u3002\u8fd9 200ms \u7684\u5361\u987f\u521a\u597d\u51fa\u73b0\u5728\u80cc\u666f\u8272\u8fc7\u6e21\u548c\u7c92\u5b50\u6269\u6563\u540c\u65f6\u89e6\u53d1\u7684\u90a3\u4e00\u5e27\u3002<\/p>\n
\u52a8\u6548\u6027\u80fd\u4f18\u5316\u7684\u6096\u8bba\u5728\u4e8e：\u52a8\u753b\u662f\u8ba9\u754c\u9762"\u770b\u8d77\u6765\u66f4\u5feb"\u7684\u5de5\u5177，\u4f46\u4e00\u4e2a\u5361\u987f\u7684\u52a8\u753b\u4f1a\u8ba9\u754c\u9762"\u611f\u89c9\u66f4\u6162"\u3002\u7528\u6237\u5bf9 100ms \u7684\u52a0\u8f7d\u5ef6\u8fdf\u5bb9\u5fcd\u5ea6\u5f88\u9ad8，\u4f46\u5bf9 100ms \u7684\u52a8\u753b\u6389\u5e27\u5bb9\u5fcd\u5ea6\u51e0\u4e4e\u4e3a\u96f6\u3002\u56e0\u4e3a\u52a8\u753b\u662f\u4e3b\u52a8\u7684\u89c6\u89c9\u627f\u8bfa\u2014\u2014"\u6211\u5728\u52a8，\u8bf7\u770b\u7740\u6211"\u2014\u2014\u4e00\u65e6\u5b83\u5361\u4e86，\u5c31\u662f\u5728\u6253\u7834\u8fd9\u4e2a\u627f\u8bfa\u3002<\/p>\n
\u52a8\u6548\u6027\u80fd\u95ee\u9898\u7684\u6839\u56e0\u5206\u6790\u9700\u8981\u7406\u89e3\u6d4f\u89c8\u5668\u7684\u6e32\u67d3\u7ba1\u7ebf，\u4ee5\u53ca CSS \u52a8\u753b\u5728\u6bcf\u4e00\u5e27\u4e2d\u89e6\u53d1\u4e86\u54ea\u4e9b\u6e32\u67d3\u6b65\u9aa4\u3002<\/p>\n
\u6d4f\u89c8\u5668\u6e32\u67d3\u6bcf\u4e00\u5e27\u7684\u9884\u7b97\u662f 16.67ms（60fps）\u3002\u8fd9\u4e2a\u9884\u7b97\u9700\u8981\u5206\u7ed9：JavaScript \u6267\u884c \u2192 \u6837\u5f0f\u8ba1\u7b97 \u2192 \u5e03\u5c40 \u2192 \u7ed8\u5236 \u2192 \u5408\u6210\u3002CSS \u52a8\u753b\u89e6\u53d1\u7684\u5c5e\u6027\u7c7b\u578b\u51b3\u5b9a\u4e86\u6e32\u67d3\u6b65\u9aa4\u7684\u6df1\u5ea6：<\/p>\n
\u4ec5\u89e6\u53d1\u5408\u6210（Compositor-only）\u7684\u5c5e\u6027：transform（translate\u3001scale\u3001rotate\u3001skew）\u548c opacity\u3002\u8fd9\u662f\u52a8\u753b\u6027\u80fd\u7684\u9ec4\u91d1\u7ec4\u5408，\u56e0\u4e3a\u5b83\u4eec\u5b8c\u5168\u8fd0\u884c\u5728\u5408\u6210\u5668\u7ebf\u7a0b\u4e0a，\u4e0d\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002GPU \u5904\u7406\u8fd9\u4e9b\u53d8\u6362\u7684\u5f00\u9500\u7ea6 0.5ms\u3002<\/p>\n
\u89e6\u53d1\u91cd\u7ed8（Paint）\u7684\u5c5e\u6027：color\u3001background\u3001box-shadow\u3001border-color\u3002\u4e0d\u4f1a\u89e6\u53d1\u5e03\u5c40，\u4f46\u9700\u8981\u91cd\u65b0\u5149\u6805\u5316\u3002\u5f00\u9500 2-5ms，\u53d6\u51b3\u4e8e\u5143\u7d20\u9762\u79ef\u3002<\/p>\n
\u89e6\u53d1\u91cd\u6392（Layout）\u7684\u5c5e\u6027：width\u3001height\u3001margin\u3001padding\u3001top\u3001left\u3002\u8fd9\u4e9b\u5c5e\u6027\u6539\u53d8\u4f1a\u8feb\u4f7f\u6d4f\u89c8\u5668\u91cd\u65b0\u8ba1\u7b97\u6574\u4e2a\u5e03\u5c40\u6811\u3002\u5f00\u9500 10-50ms，\u53d6\u51b3\u4e8e DOM \u6811\u89c4\u6a21\u3002<\/p>\n
\/**
\n * \u52a8\u6548\u6027\u80fd\u8fd0\u884c\u65f6\u5206\u6790\u5668
\n *
\n * \u5728\u5f00\u53d1\u73af\u5883\u5b9e\u65f6\u76d1\u63a7\u52a8\u753b\u5e27\u7387，
\n * \u68c0\u6d4b\u957f\u4efb\u52a1（Long Task）\u5e76\u5b9a\u4f4d\u6027\u80fd\u74f6\u9888\u3002
\n *\/<\/p>\n
interface FrameMetrics {
\n timestamp: number;
\n duration: number; \/\/ \u5e27\u8017\u65f6(ms)
\n fps: number; \/\/ \u77ac\u65f6\u5e27\u7387
\n droppedFrames: number;
\n jankSeverity: 'none' | 'minor' | 'major';
\n}<\/p>\n
interface AnimationProfile {
\n element: Element;
\n animatedProperties: string[];
\n averageFps: number;
\n minFps: number;
\n jankCount: number;
\n compositorOnly: boolean; \/\/ \u662f\u5426\u4ec5\u89e6\u53d1\u5408\u6210\u5c42
\n}<\/p>\n
\/**
\n * \u5e27\u7387\u76d1\u63a7\u5668
\n *
\n * \u6838\u5fc3\u539f\u7406：
\n * 1. \u4f7f\u7528 requestAnimationFrame \u8bb0\u5f55\u6bcf\u5e27\u65f6\u95f4\u6233
\n * 2. \u5e27\u95f4\u9694 > 16.67ms * 1.5 \u2248 25ms \u5224\u5b9a\u4e3a\u6389\u5e27
\n * 3. \u8fde\u7eed\u6389\u5e27 3 \u5e27\u4ee5\u4e0a\u6807\u8bb0\u4e3a\u4e25\u91cd\u5361\u987f
\n *\/
\nclass FrameRateMonitor {
\n private frames: FrameMetrics[] = [];
\n private lastFrameTime = 0;
\n private rafId: number | null = null;
\n private running = false;
\n private consecutiveJanks = 0;<\/p>\n
\/**
\n * \u5f00\u59cb\u76d1\u63a7
\n * @param sampleDuration \u91c7\u6837\u65f6\u957f(ms)，\u9ed8\u8ba4 3000
\n *\/
\n start(sampleDuration = 3000): void {
\n this.running = true;
\n this.frames = [];
\n this.lastFrameTime = performance.now();<\/p>\n
const tick = (now: number) => {
\n if (!this.running) return;<\/p>\n
const frameDuration = now – this.lastFrameTime;
\n const fps = 1000 \/ frameDuration;
\n const idealFrameTime = 1000 \/ 60; \/\/ 16.67ms
\n const isJank = frameDuration > idealFrameTime * 1.5; \/\/ > 25ms<\/p>\n
if (isJank) {
\n this.consecutiveJanks++;
\n } else {
\n this.consecutiveJanks = 0;
\n }<\/p>\n
this.frames.push({
\n timestamp: now,
\n duration: frameDuration,
\n fps: Math.min(fps, 60),
\n droppedFrames: Math.floor(frameDuration \/ idealFrameTime) – 1,
\n jankSeverity:
\n this.consecutiveJanks >= 3 ? 'major' :
\n isJank ? 'minor' : 'none',
\n });<\/p>\n
this.lastFrameTime = now;<\/p>\n
\/\/ \u4fdd\u6301\u6700\u8fd1 sampleDuration \u7684\u6570\u636e
\n const cutoff = now – sampleDuration;
\n this.frames = this.frames.filter((f) => f.timestamp > cutoff);<\/p>\n
this.rafId = requestAnimationFrame(tick);
\n };<\/p>\n
this.rafId = requestAnimationFrame(tick);
\n }<\/p>\n
\/**
\n * \u505c\u6b62\u76d1\u63a7，\u8fd4\u56de\u7edf\u8ba1\u6570\u636e
\n *\/
\n stop(): {
\n averageFps: number;
\n minFps: number;
\n jankRate: number; \/\/ \u6389\u5e27\u6bd4\u4f8b
\n majorJankCount: number;
\n } {
\n this.running = false;
\n if (this.rafId) cancelAnimationFrame(this.rafId);<\/p>\n
if (this.frames.length === 0) {
\n return { averageFps: 60, minFps: 60, jankRate: 0, majorJankCount: 0 };
\n }<\/p>\n
const totalFps = this.frames.reduce((s, f) => s + f.fps, 0);
\n const averageFps = totalFps \/ this.frames.length;
\n const minFps = Math.min(…this.frames.map((f) => f.fps));
\n const jankFrames = this.frames.filter((f) => f.jankSeverity !== 'none');
\n const majorJank = this.frames.filter((f) => f.jankSeverity === 'major');<\/p>\n
return {
\n averageFps: Math.round(averageFps * 10) \/ 10,
\n minFps: Math.round(minFps * 10) \/ 10,
\n jankRate: jankFrames.length \/ this.frames.length,
\n majorJankCount: majorJank.length,
\n };
\n }
\n}<\/p>\n
\/**
\n * \u52a8\u753b\u5c5e\u6027\u5206\u6790\u5668
\n *
\n * \u5206\u6790\u6307\u5b9a\u5143\u7d20\u4e0a\u54ea\u4e9b CSS \u5c5e\u6027\u6b63\u5728\u88ab\u52a8\u753b\u5316，
\n * \u5e76\u5224\u65ad\u662f\u5426\u4e3a\u4ec5\u5408\u6210\u5c42\u5c5e\u6027（\u9ad8\u6027\u80fd）\u6216\u89e6\u53d1\u5e03\u5c40\/\u91cd\u7ed8（\u4f4e\u6027\u80fd）\u3002
\n *\/
\nclass AnimationPropertyAnalyzer {
\n \/\/ \u4ec5\u89e6\u53d1\u5408\u6210\u7684\u5c5e\u6027（\u9ad8\u6027\u80fd\u767d\u540d\u5355）
\n private readonly COMPOSITOR_ONLY = new Set([
\n 'transform', 'opacity',
\n ]);<\/p>\n
\/\/ \u89e6\u53d1\u91cd\u7ed8\u7684\u5c5e\u6027（\u4e2d\u6027\u80fd）
\n private readonly PAINT_TRIGGER = new Set([
\n 'color', 'background', 'background-color', 'border-color',
\n 'box-shadow', 'outline-color', 'text-decoration-color',
\n ]);<\/p>\n
\/\/ \u89e6\u53d1\u91cd\u6392\u7684\u5c5e\u6027（\u4f4e\u6027\u80fd）
\n private readonly LAYOUT_TRIGGER = new Set([
\n 'width', 'height', 'min-width', 'max-width',
\n 'margin', 'padding', 'top', 'left', 'right', 'bottom',
\n 'font-size', 'line-height', 'border-width',
\n ]);<\/p>\n
\/**
\n * \u5206\u6790\u5143\u7d20\u4e0a\u7684\u52a8\u753b\u5c5e\u6027
\n *
\n * \u8bfb\u53d6 computedStyle \u548c CSS animations\/transitions \u914d\u7f6e
\n *\/
\n analyze(element: Element): AnimationProfile | null {
\n const style = window.getComputedStyle(element);
\n const animationName = style.animationName;
\n const transitionProperty = style.transitionProperty;<\/p>\n
if (animationName === 'none' && transitionProperty === 'all 0s ease 0s') {
\n return null; \/\/ \u5143\u7d20\u65e0\u52a8\u753b
\n }<\/p>\n
\/\/ \u89e3\u6790\u52a8\u753b\u5c5e\u6027\u540d
\n const animatedProps = this.extractAnimatedProperties(style);<\/p>\n
\/\/ \u5206\u6790\u6bcf\u4e2a\u5c5e\u6027\u7684\u6027\u80fd\u7b49\u7ea7
\n const compositorProps: string[] = [];
\n const paintProps: string[] = [];
\n const layoutProps: string[] = [];<\/p>\n
for (const prop of animatedProps) {
\n if (this.COMPOSITOR_ONLY.has(prop)) compositorProps.push(prop);
\n else if (this.PAINT_TRIGGER.has(prop)) paintProps.push(prop);
\n else if (this.LAYOUT_TRIGGER.has(prop)) layoutProps.push(prop);
\n }<\/p>\n
return {
\n element,
\n animatedProperties: animatedProps,
\n averageFps: 0, \/\/ \u9700\u8981\u7ed3\u5408 FPS \u76d1\u63a7
\n minFps: 0,
\n jankCount: 0,
\n compositorOnly: paintProps.length === 0 && layoutProps.length === 0,
\n };
\n }<\/p>\n
\/**
\n * \u63d0\u53d6\u5f53\u524d\u52a8\u753b\u4e2d\u7684 CSS \u5c5e\u6027
\n *\/
\n private extractAnimatedProperties(style: CSSStyleDeclaration): string[] {
\n const props = new Set<string>();<\/p>\n
\/\/ \u4ece animation-name \u63a8\u65ad\u52a8\u753b\u5c5e\u6027
\n const animName = style.animationName;
\n if (animName && animName !== 'none') {
\n \/\/ \u8bfb\u53d6 @keyframes \u5b9a\u4e49\u4e2d\u7684\u5c5e\u6027
\n const sheet = this.findStyleSheet(animName);
\n if (sheet) {
\n const keyframeProps = this.parseKeyframeProperties(sheet, animName);
\n keyframeProps.forEach((p) => props.add(p));
\n }
\n }<\/p>\n
\/\/ \u4ece transition-property \u8bfb\u53d6
\n const transProp = style.transitionProperty;
\n if (transProp && transProp !== 'all') {
\n transProp.split(',').forEach((p) => {
\n const trimmed = p.trim();
\n if (trimmed) props.add(trimmed);
\n });
\n }<\/p>\n
return […props];
\n }<\/p>\n
\/**
\n * \u5728\u6837\u5f0f\u8868\u4e2d\u67e5\u627e @keyframes \u5b9a\u4e49
\n *\/
\n private findStyleSheet(name: string): CSSStyleSheet | null {
\n for (const sheet of document.styleSheets) {
\n try {
\n for (const rule of sheet.cssRules) {
\n if (
\n rule instanceof CSSKeyframesRule &&
\n rule.name === name
\n ) {
\n return sheet;
\n }
\n }
\n } catch {
\n \/\/ \u8de8\u57df\u6837\u5f0f\u8868\u65e0\u6cd5\u8bbf\u95ee，\u8df3\u8fc7
\n }
\n }
\n return null;
\n }<\/p>\n
\/**
\n * \u89e3\u6790 @keyframes \u4e2d\u4f7f\u7528\u7684\u5c5e\u6027
\n *\/
\n private parseKeyframeProperties(
\n sheet: CSSStyleSheet,
\n name: string
\n ): string[] {
\n const props = new Set<string>();
\n try {
\n for (const rule of sheet.cssRules) {
\n if (
\n rule instanceof CSSKeyframesRule &&
\n rule.name === name
\n ) {
\n for (const keyframe of rule.cssRules) {
\n const style = (keyframe as CSSKeyframeRule).style;
\n for (let i = 0; i < style.length; i++) {
\n props.add(style[i]);
\n }
\n }
\n }
\n }
\n } catch {
\n \/\/ \u8de8\u57df\u6837\u5f0f\u8868\u65e0\u6cd5\u8bbf\u95ee
\n }
\n return […props];
\n }
\n}<\/p>\n
\/**
\n * \u52a8\u6548\u6027\u80fd\u4f18\u5316\u5efa\u8bae\u751f\u6210\u5668
\n *
\n * \u6839\u636e\u5206\u6790\u7ed3\u679c\u81ea\u52a8\u751f\u6210\u4f18\u5316\u5efa\u8bae
\n *\/
\nclass AnimationOptimizer {
\n private monitor = new FrameRateMonitor();
\n private analyzer = new AnimationPropertyAnalyzer();<\/p>\n
\/**
\n * \u5bf9\u9875\u9762\u4e2d\u6240\u6709\u52a8\u753b\u5143\u7d20\u8fdb\u884c\u6027\u80fd\u5206\u6790
\n *\/
\n analyzePage(): {
\n profiles: AnimationProfile[];
\n fpsStats: ReturnType<FrameRateMonitor['stop']>;
\n suggestions: string[];
\n } {
\n \/\/ 1. \u5e27\u7387\u76d1\u63a7（5\u79d2\u91c7\u6837）
\n this.monitor.start(5000);<\/p>\n
\/\/ 2. \u7b49\u5f85\u91c7\u6837\u5b8c\u6210\u540e\u5206\u6790\u6240\u6709\u52a8\u753b\u5143\u7d20
\n const profiles: AnimationProfile[] = [];
\n const allElements = document.querySelectorAll('*');<\/p>\n
for (const el of allElements) {
\n const profile = this.analyzer.analyze(el);
\n if (profile) profiles.push(profile);
\n }<\/p>\n
const fpsStats = this.monitor.stop();<\/p>\n
\/\/ 3. \u751f\u6210\u4f18\u5316\u5efa\u8bae
\n const suggestions = this.generateSuggestions(profiles, fpsStats);<\/p>\n
return { profiles, fpsStats, suggestions };
\n }<\/p>\n
\/**
\n * \u6839\u636e\u5206\u6790\u7ed3\u679c\u751f\u6210\u4eba\u7c7b\u53ef\u8bfb\u7684\u4f18\u5316\u5efa\u8bae
\n *\/
\n private generateSuggestions(
\n profiles: AnimationProfile[],
\n fpsStats: ReturnType<FrameRateMonitor['stop']>
\n ): string[] {
\n const suggestions: string[] = [];<\/p>\n
\/\/ \u5e27\u7387\u4e0d\u8fbe\u6807
\n if (fpsStats.averageFps < 55) {
\n suggestions.push(
\n `\u6574\u4f53\u5e27\u7387\u504f\u4f4e（${fpsStats.averageFps}fps），\u6389\u5e27\u7387 ${(fpsStats.jankRate * 100).toFixed(1)}%\u3002`
\n );
\n }<\/p>\n
\/\/ \u68c0\u67e5\u975e\u5408\u6210\u5668\u5c5e\u6027\u52a8\u753b
\n const nonCompositor = profiles.filter((p) => !p.compositorOnly);
\n if (nonCompositor.length > 0) {
\n const props = nonCompositor.flatMap((p) =>
\n p.animatedProperties.filter(
\n (ap) => ap !== 'transform' && ap !== 'opacity'
\n )
\n );
\n const uniqueProps = […new Set(props)];<\/p>\n
suggestions.push(
\n `\u53d1\u73b0 ${nonCompositor.length} \u4e2a\u5143\u7d20\u4f7f\u7528\u4e86\u4f4e\u6027\u80fd\u52a8\u753b\u5c5e\u6027：${uniqueProps.join(', ')}\u3002` +
\n `\u5efa\u8bae\u66ff\u6362\u4e3a transform \u548c opacity \u7684\u7ec4\u5408\u3002`
\n );<\/p>\n
\/\/ \u9488\u5bf9\u6027\u5efa\u8bae
\n if (props.includes('width') || props.includes('height')) {
\n suggestions.push(
\n 'width\/height \u52a8\u753b\u89e6\u53d1\u91cd\u6392，\u66ff\u6362\u4e3a scaleX\/scaleY（transform）\u3002'
\n );
\n }
\n if (props.includes('top') || props.includes('left')) {
\n suggestions.push(
\n 'top\/left \u52a8\u753b\u89e6\u53d1\u91cd\u6392，\u66ff\u6362\u4e3a translateX\/translateY（transform）\u3002'
\n );
\n }
\n if (props.includes('box-shadow')) {
\n suggestions.push(
\n 'box-shadow \u52a8\u753b\u89e6\u53d1\u91cd\u7ed8，\u8003\u8651\u7528\u4f2a\u5143\u7d20 + opacity \u8fc7\u6e21\u66ff\u4ee3\u3002'
\n );
\n }
\n if (props.includes('background-color') || props.includes('color')) {
\n suggestions.push(
\n 'color \u52a8\u753b\u89e6\u53d1\u91cd\u7ed8，\u5982\u679c\u53ef\u4ee5\u63a5\u53d7，\u7528 opacity \u53e0\u52a0\u53cc\u5143\u7d20\u5b9e\u73b0\u989c\u8272\u8fc7\u6e21\u3002'
\n );
\n }
\n }<\/p>\n
\/\/ \u4e25\u91cd\u5361\u987f\u9891\u53d1
\n if (fpsStats.majorJankCount > 3) {
\n suggestions.push(
\n `\u68c0\u6d4b\u5230 ${fpsStats.majorJankCount} \u6b21\u4e25\u91cd\u5361\u987f（\u8fde\u7eed 3 \u5e27\u4ee5\u4e0a\u6389\u5e27），` +
\n '\u5efa\u8bae\u68c0\u67e5\u662f\u5426\u6709\u540c\u6b65\u7684\u957f\u4efb\u52a1\u963b\u585e\u4e3b\u7ebf\u7a0b\u3002'
\n );
\n }<\/p>\n
return suggestions;
\n }
\n}<\/p>\n
\/\/ \u4f7f\u7528\u793a\u4f8b
\nconst optimizer = new AnimationOptimizer();
\nconst report = optimizer.analyzePage();
\nconsole.log('FPS Stats:', report.fpsStats);
\nconsole.log('Suggestions:', report.suggestions);<\/p>\n
\/\/ ===== will-change \u4f7f\u7528\u6307\u5357 =====
\n\/**
\n * will-change \u7684\u6b63\u786e\u7528\u6cd5：
\n *
\n * 1. \u4ec5\u5bf9\u5373\u5c06\u52a8\u753b\u7684\u5143\u7d20\u4f7f\u7528
\n * 2. \u52a8\u753b\u5f00\u59cb\u524d\u8bbe\u7f6e，\u7ed3\u675f\u540e\u79fb\u9664
\n * 3. \u4e0d\u8981\u5bf9\u8fc7\u591a\u5143\u7d20\u540c\u65f6\u8bbe\u7f6e（\u5185\u5b58\u5f00\u9500\u5927）
\n *\/
\nfunction prepareForAnimation(element: HTMLElement): () => void {
\n element.style.willChange = 'transform, opacity';
\n \/\/ \u8fd4\u56de\u6e05\u7406\u51fd\u6570
\n return () => {
\n element.style.willChange = 'auto';
\n };
\n}<\/p>\n
\/\/ ===== \u5f3a\u5236\u521b\u5efa\u5408\u6210\u5c42 =====
\n\/**
\n * \u4f7f\u7528 translateZ(0) \u6216 backface-visibility: hidden
\n * \u5f3a\u5236\u5143\u7d20\u63d0\u5347\u5230\u72ec\u7acb\u7684\u5408\u6210\u5c42
\n *
\n * \u6ce8\u610f：\u8fc7\u5ea6\u4f7f\u7528\u4f1a\u5bfc\u81f4 GPU \u5185\u5b58\u538b\u529b（\u6bcf\u5c42 ~2-4MB）
\n *\/
\nfunction promoteToLayer(element: HTMLElement): void {
\n element.style.transform = 'translateZ(0)';
\n \/\/ \u6216\u8005
\n \/\/ element.style.willChange = 'transform';
\n}<\/p>\n
will-change \u7684\u8fc7\u5ea6\u4f7f\u7528\u9677\u9631：will-change: transform \u544a\u8bc9\u6d4f\u89c8\u5668"\u8fd9\u4e2a\u5143\u7d20\u9a6c\u4e0a\u8981\u52a8"，\u6d4f\u89c8\u5668\u4f1a\u63d0\u524d\u521b\u5efa GPU \u5c42\u3002\u4f46\u5982\u679c\u5bf9 50 \u4e2a\u5143\u7d20\u90fd\u8bbe\u7f6e will-change，GPU \u5185\u5b58\u5f88\u53ef\u80fd\u7206\u6389（\u79fb\u52a8\u7aef\u5c24\u5176\u654f\u611f）\u3002\u89c4\u5219\u662f：\u53ea\u5bf9\u5f53\u524d\u89c6\u53e3\u5185\u5373\u5c06\u52a8\u753b\u7684\u5143\u7d20\u8bbe\u7f6e，\u4e14\u52a8\u753b\u7ed3\u675f\u540e\u7acb\u5373\u79fb\u9664\u3002<\/p>\n
\u5408\u6210\u5c42\u7206\u70b8（Layer Explosion）：translateZ(0) \u4f1a\u4e3a\u5143\u7d20\u521b\u5efa\u72ec\u7acb\u7684 GPU \u7eb9\u7406\u3002\u5728\u79fb\u52a8\u7aef WebView \u4e2d，\u6bcf\u5c42\u7eb9\u7406\u7ea6\u5360\u7528 2-4MB VRAM\u3002\u5982\u679c\u9875\u9762\u4e2d\u6709 30 \u4e2a\u5361\u7247\u90fd\u5728\u505a scale \u52a8\u753b\u4e14\u90fd\u521b\u5efa\u4e86\u72ec\u7acb\u5408\u6210\u5c42，VRAM \u5360\u7528\u53ef\u8fbe 60-120MB，\u5728 2GB RAM \u7684\u8bbe\u5907\u4e0a\u53ef\u80fd\u89e6\u53d1 OOM \u5d29\u6e83\u3002\u9700\u8981\u76d1\u63a7 Chrome DevTools \u7684 Layers \u9762\u677f\u3002<\/p>\n
\u4f4e\u7aef\u8bbe\u5907\u7684\u5e27\u7387\u9884\u7b97\u4e0d\u540c：60fps \u662f\u684c\u9762\u548c\u65d7\u8230\u673a\u7684\u6807\u51c6，\u4f46\u4e2d\u4f4e\u7aef Android \u8bbe\u5907\u7684\u5c4f\u5e55\u5237\u65b0\u7387\u53ef\u80fd\u662f 60Hz \u4f46\u5b9e\u9645\u6e32\u67d3\u80fd\u529b\u53ea\u6709 30-45fps\u3002\u9700\u8981\u6839\u636e\u8bbe\u5907\u80fd\u529b\u52a8\u6001\u8c03\u6574\u52a8\u753b\u590d\u6742\u5ea6\u3002<\/p>\n
\u4ea4\u4e92\u52a8\u6548\u6027\u80fd\u4f18\u5316\u5168\u666f\u56fe：\u4ece\u5e27\u7387\u5206\u6790\u5230\u5408\u6210\u5668\u4f18\u5316\u7684\u5b8c\u6574\u8def\u5f84
\n\u4e00\u3001\u5f15\u5b50：\u90a3\u4e2a 200ms \u5361\u987f\u8ba9\u6574\u4e2a\u52a8\u753b\u62a5\u5e9f
\n\u4e00\u4e2a\u5f00\u5173\u6309\u94ae\u7684\u52a8\u6548\u2014\u2014\u56fe\u6807\u4ece\u5706\u5708\u53d8\u4e3a\u5bf9\u52fe，\u80cc\u666f\u8272\u4ece\u7070\u8272\u8fc7\u6e21\u5230\u7eff\u8272，\u540c\u65f6\u5f39\u51fa\u4e00\u4e2a\u5fae\u5c0f\u7c92\u5b50\u6269\u6563\u3002\u8bbe\u8ba1\u7a3f\u4e0a\u6807\u6ce8\u7684\u662f\\”300ms，ease-out\\”\u3002\u5b9e\u73b0\u540e，\u5728 iPhone 15 Pro \u4e0a\u4e1d\u6ed1\u6d41\u7545，\u5728 Redmi Note 11 \u4e0a\u5361\u4e86 200ms\u3002\u8fd9 200ms \u7684\u5361\u987f\u521a\u597d<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[573,2878,594,87],"topic":[],"class_list":["post-86068","post","type-post","status-publish","format-standard","hentry","category-server","tag-css","tag-flutter","tag-web","tag-87"],"yoast_head":"\n