vuejs鼠标拖着改变div宽度大小

功能介绍：左右2个div，大小根据用户需求可以进行拖动，具体代码如下：

template代码如下：

<template>
  <div class="drag-box" ref="dragBox">
    <div class="left">
      <!--左侧div内容-->
    </div>
    <div class="resize" title="收缩侧边栏">
      ⋮
    </div>
    <div class="right">
      <!--右侧div内容-->
    </div>
  </div>
</template>

script代码：

export default {
  data() {
    return {
      dragLeftDivWidth: "",
      dragRightDivWidth: ""
    };
  },
  mounted() {
    this.dragDiv();
  },
  methods: {
    dragDiv() {
      let resize = document.getElementsByClassName("resize");
      let left = document.getElementsByClassName("left");
      let right = document.getElementsByClassName("right");
      let dragBox = document.getElementsByClassName("drag-box");
      for (let i = 0; i < resize.length; i++) {
        // 鼠标按下事件
        resize[i].onmousedown = function(e) {
          //颜色改变提醒
          resize[i].style.background = "#818181";
          let startX = e.clientX;
          resize[i].left = resize[i].offsetLeft;
          // 鼠标拖动事件
          document.onmousemove = function(e) {
            let endX = e.clientX;
            // （endx-startx）=移动的距离。resize[i].left+移动的距离=左边区域最后的宽度
            let moveLen = resize[i].left + (endX - startX);

            // 容器宽度 - 左边区域的宽度 = 右边区域的宽度
            let maxT = dragBox[i].clientWidth - resize[i].offsetWidth;

            // 左边区域的最小宽度为32px
            if (moveLen < 32) moveLen = 32;

            //右边区域最小宽度为150px
            if (moveLen > maxT - 150) moveLen = maxT - 150;

            // 设置左侧区域的宽度
            resize[i].style.left = moveLen;

            for (let j = 0; j < left.length; j++) {
              left[j].style.width = moveLen + "px";
              right[j].style.width =
                dragBox[i].clientWidth - moveLen - 10 + "px";
              this.dragLeftDivWidth = moveLen + 10 + "px";
              this.dragRightDivWidth =
                dragBox[i].clientWidth - moveLen - 10 + "px";
            }
            console.log("获取左边宽度：", this.dragLeftDivWidth);
            console.log("获取右边宽度：", this.dragRightDivWidth);
          };
          // 鼠标松开事件
          document.onmouseup = function(evt) {
            //颜色恢复
            resize[i].style.background = "#d6d6d6";
            document.onmousemove = null;
            document.onmouseup = null;

            //当你不在需要继续获得鼠标消息就要应该调用ReleaseCapture()释放掉
            resize[i].releaseCapture && resize[i].releaseCapture();
          };

          //该函数在属于当前线程的指定窗口里设置鼠标捕获
          resize[i].setCapture && resize[i].setCapture();
          return false;
        };
      }
    }
  }
};

css代码：

.drag-box {
  width: 100%;
  height: 100%;
  margin: 1% 0px;
  overflow: hidden;
  box-shadow: -1px 9px 10px 3px rgba(0, 0, 0, 0.11);
}
/*左侧div样式*/
.left {
  width: calc(32% - 10px); /*左侧初始化宽度*/
  height: 100%;
  background: #ffffff;
  float: left;
}
/*拖拽区div样式*/
.resize {
  cursor: col-resize;
  float: left;
  position: relative;
  top: 45%;
  background-color: #d6d6d6;
  border-radius: 5px;
  margin-top: -10px;
  width: 10px;
  height: 50px;
  background-size: cover;
  background-position: center;
  /*z-index: 99999;*/
  font-size: 32px;
  color: white;
}
/*拖拽区鼠标悬停样式*/
.resize:hover {
  color: #444444;
}
/*右侧div样式*/
.right {
  float: left;
  width: 68%; /*右侧初始化宽度*/
  height: 100%;
  background: #fff;
  box-shadow: -1px 4px 5px 3px rgba(0, 0, 0, 0.11);
}