JS-拖拽元素放大缩小

效果左右布局，拖拽后，宽度放大缩小

其实自己写也可以，不过还是发现了两个好用的js库，既然不需要自己写，当然是能偷懒就偷懒
1、resizerjs

官网地址：https://github.com/eknowles/resizerjs

复制代码

<!doctype html>
<html>
<head>
  <meta charset="utf-8">
  <title>拖拽</title>
  <style>
    [data-rz-handle] {
      flex: 0 0 6px;
      background-color: rgba(0, 0, 0, 0.9);
    }

    [data-rz-handle] div {
      width: 6px;
      background-color: rgba(0, 0, 0, 0.9);
    }
    .container {
      width: 1200px;
      height: 400px;
      display: flex;
    }
    .item {
      flex: 1;
    }
    .item1 {
      background-color: green;
    }
    .item2 {
      background-color: darkred;
    }
  </style>
</head>
<body>
<div class="container">
  <div class="item item1"></div>
  <div class="item item2"></div>
</div>
<script src="./resizerjs-master/dist/resizer.js"></script>
<script>
  const myResizer = new Resizer('.container');
</script>
</body>
</html>

resizerjs 体量小一共才100多行，代码简洁，很容易看懂，很适合比较简单的场景。

2、splitjs

官网地址：https://github.com/nathancahill/split/tree/master/packages/splitjs

复制代码

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }
    .box {
      display: flex;
    }
    #one {
      height: 400px;
      background-color: green;
    }
    #two {
      height: 400px;
      background-color: rebeccapurple;
    }
    #three {
      height: 400px;
      background-color: yellowgreen;
    }
  </style>
</head>
<body>
<div class="box">
  <div id="one">content one</div>
  <div id="two">content two</div>
  <div id="three">content three</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/split.js/1.6.0/split.min.js"></script>
<script>
  Split(['#one', '#two', '#three'], {
    sizes: [25, 25, 50],
    minSize: 200,
    onDragEnd: function (sizes) {
      console.log(sizes);
    }
  });
</script>
</body>
</html>