VUE - div拖动边框调整宽度

VUE - DIV拖动边框调整宽度

 

父页面：

<template>
  <div class="m-body" >
  </div>
</template>

 

<style lang="less" scoped> 
.m-body {
  position: relative; 
}  
</style>

 

子页面：

<template>
  <div class="ucard">
    <div class="lresize" title="收缩侧边栏" v-show="dragItem.split(',').includes('left')">⋮</div>
    <div class="left" > </div>
    <div class="resize" title="收缩侧边栏" v-show="dragItem.split(',').includes('right')">⋮</div>
  </div>
</template>

 

 

<script>

export default {
  props: {
    pheight: { type: String, default: '' }, //内容高度
    dragItem: { type: String, default: '' }, //left , right
  },
  data() {
    return {
    };
  },
  computed: {},
  mounted() {
    this.dragControllerDiv();
  },

  methods: {
    dragControllerDiv() {
      var lresize = document.getElementsByClassName('lresize');
      var resize = document.getElementsByClassName('resize');
      var left = document.getElementsByClassName('left');
      var box = document.getElementsByClassName('m-body');
      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';
          var startX = e.clientX;
          resize[i].left = resize[i].offsetLeft;
          // 鼠标拖动事件
          document.onmousemove = function (e) {
            var endX = e.clientX;
            var moveLen = resize[i].left + (endX - startX); // （endx-startx）=移动的距离。resize[i].left+移动的距离=左边区域最后的宽度
            var maxT = box[0].clientWidth - resize[i].offsetWidth; // 容器宽度 - 左边区域的宽度 = 右边区域的宽度

            if (moveLen < 200) moveLen = 200; // 200px
            if (moveLen > maxT - 150) moveLen = maxT - 150; //右边区域最小宽度为150px

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

            left[i].style.width = moveLen + 'px';
          };
          // 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;
            resize[i].releaseCapture && resize[i].releaseCapture(); //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].setCapture && resize[i].setCapture(); //该函数在属于当前线程的指定窗口里设置鼠标捕获
          return false;
        };
      }

      for (let i = 0; i < lresize.length; i++) {
        // 鼠标按下事件
        lresize[i].onmousedown = function (e) {
          let cc = i;
          //颜色改变提醒
          lresize[i].style.background = '#818181';
          var startX = e.clientX;
          var leftWidthSource = left[i].offsetWidth;

          // lresize[i].left = lresize[i].offsetLeft;
          // 鼠标拖动事件
          document.onmousemove = function (e) {
            var endX = e.clientX;
            var moveLen = leftWidthSource + (startX - endX);
            var maxT = box[0].clientWidth; // 容器宽度 - 左边区域的宽度 = 右边区域的宽度

            if (moveLen < 200) moveLen = 200; // 200px
            if (moveLen > maxT - 150) moveLen = maxT - 150; //右边区域最小宽度为150px

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

            left[i].style.width = moveLen + 'px';
          };
          // 鼠标松开事件
          document.onmouseup = function (evt) {
            //颜色恢复
            lresize[i].style.background = '#d6d6d6';
            document.onmousemove = null;
            document.onmouseup = null;
            lresize[i].releaseCapture && lresize[i].releaseCapture(); //当你不在需要继续获得鼠标消息就要应该调用ReleaseCapture()释放掉
          };
          lresize[i].setCapture && lresize[i].setCapture(); //该函数在属于当前线程的指定窗口里设置鼠标捕获
          return false;
        };
      }
    },
  },
};
</script>

 

<style lang="less" scoped> 
   
.lresize {
  cursor: col-resize;
  background-color: #d6d6d6;
  border-radius: 5px;
  width: 10px;
  height: 50px;
  background-size: cover;
  background-position: center;
  font-size: 32px;
  color: white;
}

.resize {
  cursor: col-resize;
  background-color: #d6d6d6;
  border-radius: 5px;
  width: 10px;
  height: 50px;
  background-size: cover;
  background-position: center;
  font-size: 32px;
  color: white;
}
/*拖拽区鼠标悬停样式*/
.resize:hover {
  color: #444444;
}
</style>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

参考：https://blog.csdn.net/weixin_48398799/article/details/116535864