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requestAnimationFrame实现动画效果
它返回一个整数，表示定时器的编号，这个值可以传递给cancelAnimationFrame用于取消这个函数的执行 let retID = requestAnimationFrame(callback); 取消的话可直接使用canceAnimationFrame来进行取消即可 cancelAnimationFrame(retID) 调用一次只会执行一次，所以正确的循环调用方式如下： var count = 0; function step() { count++; console.log(count) if (count > 6000) { window.cancelAnimationFrame window.cancelAnimationFrame) { window.cancelAnimationFrame = function(id) { clearTimeout( id="btn">run</button> <script> var timer; btn.onclick = function(){ myDiv.style.width = '0'; cancelAnimationFrame
2.5K30发布于 2020-07-02 - 来自专栏乱码李
使用 requestAnimationFrame 实现动画
cancelAnimationFrame 取消一个先前通过调用 window.requestAnimationFrame()方法返回的动画帧请求。 = window.cancelAnimationFrame || window.mozCancelAnimationFrame let start = null let myReq = null requestAnimationFrame(step) } } myReq = requestAnimationFrame(step) setTimeout(() => { window.cancelAnimationFrame = (window[vp+'CancelAnimationFrame'] || window[vp+'CancelRequestAnimationFrame window.cancelAnimationFrame) { let lastTime = 0; window.requestAnimationFrame = function
1.3K30发布于 2021-11-26 - 来自专栏九彩拼盘的叨叨叨
requestAnimationFrame简介
window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame']; window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] || // name has changed in Webkit window.cancelAnimationFrame) { window.cancelAnimationFrame = function(id) { clearTimeout
98820发布于 2018-08-27 - </body> <script> var timer = null; box.onclick = function(){ cancelAnimationFrame来自专栏全栈程序员必看
点击按钮，回到页面顶部的5种写法
的动画效果 使用定时器，将scrollTop的值每次减少50，直到减少到0，则动画完毕 <script> var timer = null; box.onclick = function(){ cancelAnimationFrame scrollTo(x,y)中的y参数通过scrollTop值获取，每次减少50，直到减少到0，则动画完毕 <script> var timer = null; box.onclick = function(){ cancelAnimationFrame 将scrollBy(x,y)中的y参数设置为-50，直到scrollTop为0，则回滚停止 <script> var timer = null; box.onclick = function(){ cancelAnimationFrame document.documentElement.scrollTop; if(oTop > 0){ scrollBy(0,-50); timer = requestAnimationFrame(fn); }else{ cancelAnimationFrame box”>
4K30编辑于 2022-09-07
基于JS实现回到页面顶部的五种写法(从实现到增强)
的动画效果 使用定时器，将scrollTop的值每次减少50，直到减少到0，则动画完毕 <script> var timer = null; box.onclick = function(){ cancelAnimationFrame y)中的y参数通过scrollTop值获取，每次减少50，直到减少到0，则动画完毕 <script> var timer = null; box.onclick = function(){ cancelAnimationFrame scrollBy(x,y)中的y参数设置为-50，直到scrollTop为0，则回滚停止 <script> var timer = null; box.onclick = function(){ cancelAnimationFrame scrollBy(0,-50); timer = requestAnimationFrame(fn); }else{ cancelAnimationFrame
requestAnimationFrame实现单张图片无缝持续滚动
window.cancelAnimationFrame ) { let lastTime = 0; = window.cancelAnimationFrame || window.webkitCancelAnimationFrame // 暂停动画 pause: () => { cancelAnimationFrame window.cancelAnimationFrame ) { let lastTime = 0; window.requestAnimationFrame = , // 暂停动画 pause: () => { if(requestId){ cancelAnimationFrame
每日两题 T33
window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame const cancelAnimationFrame = window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame requestAnimationFrame(scrollLeft) } requestId = requestAnimationFrame(scrollLeft) if (pause) cancelAnimationFrame (requestId) return () => cancelAnimationFrame(requestId) }, [notice, pause]) References [1] 面试题
js动画效果_js动画函数
window.requestAnimationFrame; ++x) { window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame']; window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame']; } if window.cancelAnimationFrame) window.cancelAnimationFrame = function(id) { clearTimeout(id); }; }());
基于HTML5的爱心表白动画特效
window.requestAnimationFrame;++a){window.requestAnimationFrame=window[c[a]+"RequestAnimationFrame"];window.cancelAnimationFrame =window[c[a]+"CancelAnimationFrame"]||window[c[a]+"CancelRequestAnimationFrame"]}if(! window.cancelAnimationFrame){window.cancelAnimationFrame=function(d){clearTimeout(d)}}}());var Point
动态爱心
window.requestAnimationFrame;++a){window.requestAnimationFrame=window[c[a]+"RequestAnimationFrame"];window.cancelAnimationFrame =window[c[a]+"CancelAnimationFrame"]||window[c[a]+"CancelRequestAnimationFrame"]}if(! window.cancelAnimationFrame){window.cancelAnimationFrame=function(d){clearTimeout(d)}}}()); /* *
rAF实现表格内容自动滚动
window.requestAnimationFrame(myscroll.bind(null, el)); el.addEventListener("mouseenter", () => { window.cancelAnimationFrame myscroll(el) { el.scrollTop += 2; if (el.clientHeight + el.scrollTop >= el.scrollHeight) { // cancelAnimationFrame myscroll(el) { el.scrollTop += 2; if (el.clientHeight + el.scrollTop >= el.scrollHeight) { window.cancelAnimationFrame myscroll(el) { el.scrollTop += 2; if (el.clientHeight + el.scrollTop >= el.scrollHeight) { window.cancelAnimationFrame onBeforeUnmount(() => { window.cancelAnimationFrame(rAFid); }); 参考： requestAnimationFram优势 MDN
requestAnimationFrame
你可以传这个值给 window.cancelAnimationFrame() 以取消回调函数。 如何使用？ function test() { rAF = requestAnimationFrame(test); console.log("rAF:", rAF);} 取消执行传这个值给 window.cancelAnimationFrame stratBtn.addEventListener("click", () => { rAF = requestAnimationFrame(test);});stopBtn.addEventListener("click", () => { cancelAnimationFrame requestAnimationFrame(test) }); stopBtn.addEventListener("click", () => { cancelAnimationFrame
如何计算浏览器页面的帧数 FPS？
另外，可以通过 cancelAnimationFrame 方法取消，需要提供 raf 返回的 id： cancelAnimationFrame(id); 实时显示 FPS FPS，是 frames per
DOM操作
window.cancelAnimationFrame() 来取消这个回调函数。 window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame']; window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame lastTime = currTime + timeToCall; return id; }; window.cancelAnimationFrame
【新年气象】WordPress 主题添加花瓣飘落特效
window.requestAnimationFrame;++i){var vp=vendors[i];window.requestAnimationFrame=window[vp+"RequestAnimationFrame"];window.cancelAnimationFrame =(window[vp+"CancelAnimationFrame"]||window[vp+"CancelRequestAnimationFrame"])}if(/iP(ad|hone|od). window.cancelAnimationFrame){var lastTime=0;window.requestAnimationFrame=function(callback){var now=Date.now Math.max(lastTime+16,now);return setTimeout(function(){callback(lastTime=nextTime)},nextTime-now)};window.cancelAnimationFrame this.clear=function(){$(".snowfall-canvas").remove();$(element).children(".snowfall-flakes").remove();cancelAnimationFrame
使用 requestAnimationFrame 替代 throttle 优化页面性能
{ window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame']; window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame window.cancelAnimationFrame) window.cancelAnimationFrame = function(id) { clearTimeout
你不知道的 CSS 进度条
maxPercentage) { timer = window.requestAnimationFrame(percentageChange); } else { window.cancelAnimationFrame maxPercentage) { timer = window.requestAnimationFrame(percentageChange); } else { window.cancelAnimationFrame maxPercentage) { timer = window.requestAnimationFrame(percentageChange); } else { window.cancelAnimationFrame maxPercentage) { timer = window.requestAnimationFrame(percentageChange); } else { window.cancelAnimationFrame
Vue 折腾记 - (6) 写一个不大靠谱的backToTop组件
window.requestAnimationFrame = window[vendors[x] + "RequestAnimationFrame"]; window.cancelAnimationFrame = window[vendors[x] + "CancelAnimationFrame"] || window[vendors[x] + "CancelRequestAnimationFrame window.cancelAnimationFrame) window.cancelAnimationFrame = function(id) { clearTimeout(
JavaScript动画 —— 弹动动画
function( callback ){ window.setTimeout(callback, 1000 / 60); }; })(); // cancelAnimationFrame 的兼容性写法 window.cancelAnimationFrame = (function () { return window.cancelAnimationFrame || function( callback ){ window.setTimeout(callback, 1000 / 60); }; })(); // cancelAnimationFrame 的兼容性写法 window.cancelAnimationFrame = (function () { return window.cancelAnimationFrame ||
【HarmonyOS之旅】基于ArkTS开发(三) -＞ 兼容JS的类Web开发(七) -＞ JS动画(二)
this.flag } }, onDestroy() { cancelAnimationFrame(this.animation); } } 说明 requestAnimationFrame 2.2 -> 取消动画帧 通过cancelAnimationFrame函数取消逐帧回调，在调用cancelAnimationFrame函数时取消requestAnimationFrame函数的请求。 this.flag } }, onDestroy() { cancelAnimationFrame(this.animation); } } 说明 在调用该函数时需传入一个具有标识
