FLIP动画 概述
什么是FLIP动画技术？FLIP其实是一种思路, 一种方法论, 并不是具体指代某个技术.
FLIP, 具体意义如下：
- F first 加入过渡元素的初始状态
- L last 元素的终止状态
- I invert flip的外围, 通过first和last计算， 而后翻转这个过程
- P play 启用tansition, 移除你invert的扭转，这时候动画会按预期实现
实际操作，利用FLIP思路实现过渡动画
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> .row span { padding: 0 5px; display: inline-block; } </style></head><body> <div class="row" id="row"> </div> <button onclick="randomFLIP()">点击打乱</button></body><script> const render = (arr) => { document.getElementById('row').innerHTML = arr.map(v => `<span id="k${v}">${v}</span>`).join('') } const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0] render(arr) // 随机打乱 function shuffle(arr) { for (var i = arr.length - 1; i >= 0; i--) { var randomIndex = Math.floor(Math.random() * (i + 1)); var itemAtIndex = arr[randomIndex]; arr[randomIndex] = arr[i]; arr[i] = itemAtIndex; } return arr; } // FLIP动画函数 function randomFLIP() { const randomArr = shuffle(arr) // First const firstRect = (() => { const result = {} arr.map(v => { result[`k${v}`] = document.getElementById(`k${v}`).getBoundingClientRect() }) return result })() render(randomArr) // Last const lastRect = (() => { const result = {} randomArr.map(v => { result[`k${v}`] = document.getElementById(`k${v}`).getBoundingClientRect() }) return result })() // invert arr.forEach(v => { const first = firstRect[`k${v}`] const last = lastRect[`k${v}`] const deltaX = first.left - last.left; const deltaY = first.top - last.top; document.getElementById(`k${v}`).style = `transform: translate(${deltaX}px, ${deltaY}px);` requestAnimationFrame(function () { // Play 去掉translate, 加上动画 document.getElementById(`k${v}`).style = 'transition: all 1s' document.getElementById(`k${v}`).style.transform = '' }) }) }</script></html>在线预览
http://jsrun.net/ZIVKp