vuejs如何实现穿梭框左右拖拽（附代码）

如何利用vuejs实现一个像element-ui插件一个穿梭框左右拖拽的功能，下面编程教程网小编给大家介绍一下！

template代码如下：

<template>
  <div>
    <h3 style="text-align: center">拖拽穿梭框</h3>
    <div id="home" @mousemove="mousemove($event)">
      <div class="tree-select-content">
        <span
          class="select-content"
          :id="'mouse' + index"
          v-for="(item, index) in leftData"
          :key="item.id"
          @mousedown="mousedown(index, 1)"
          @mouseup="mouseup(item, 1, index)"
        >
          <span class="select-text">{{ item.label }}</span>
          <span class="select-text-X" @click="handerClickX(item, index, 1)"
            >X</span
          >
        </span>
      </div>
      <div class="tree-select-content">
        <span
          class="select-content"
          :id="'deleteMouse' + index"
          v-for="(item, index) in rightData"
          :key="item.id"
          @mousedown="mousedown(index, 2)"
          @mouseup="mouseup(item, 2, index)"
        >
          <span class="select-text">{{ item.label }}</span>
          <span class="select-text-X" @click="handerClickX(item, index, 2)"
            >X</span
          >
        </span>
      </div>
    </div>
  </div>
</template>

js代码如下：

export default {
  name: "home",
  data() {
    return {
      leftData: [
        { label: "中国", id: 1 },
        { label: "美国", id: 2 },
        { label: "英国", id: 3 },
        { label: "法国", id: 4 },
        { label: "荷兰", id: 5 },
      ],
      rightData: [{ label: "世界", id: 6 }],
      isMoveTrue: false,
      isMove: false,
      moveId: "",
    };
  },
  methods: {
    mousedown(index, val) {
      this.isMoveTrue = true;
      if (val == 1) {
        this.moveId = "mouse" + index;
      } else {
        this.moveId = "deleteMouse" + index;
      }
    },
    mousemove(event) {
      if (this.isMoveTrue) {
        this.isMove = true;
        document.getElementById(this.moveId).style.position = "absolute";
        document.getElementById(this.moveId).style.top = event.clientY + "px";
        document.getElementById(this.moveId).style.left = event.clientX + "px";
        document.getElementById(this.moveId).style.transform =
          "translate(-50%,-50%)";
      }
    },
    mouseup(item, val, index) {
      if (!this.isMove) {
        this.isMoveTrue = false;
        this.moveId = "";
      }
      if (this.isMoveTrue && val == 2) {
        this.$nextTick(() => {
          this.rightData.splice(index, 1);
          this.leftData.push(item);
        });
      } else if (this.isMoveTrue && val) {
        this.leftData.splice(index, 1);
        this.rightData.push(item);
      }
      document.getElementById(this.moveId).style.display = "none";
      this.isMoveTrue = false;
      this.isMove = false;
      this.moveId = "";
    },
    handerClickX(item, index, val) {
      if (val == 1) {
        this.leftData.splice(index, 1);
        this.rightData.push(item);
      } else {
        this.rightData.splice(index, 1);
        this.leftData.push(item);
      }
    },
  },
};

css样式

#home {
  display: flex;
  justify-content: space-around;
}
.tree-select-content {
  width: 40%;
  height: 300px;
  background: #f9faff;
  border: 1px solid #dee0ec;
  border-radius: 4px;
  display: flex;
  flex-wrap: wrap;
  align-content: baseline;
}
.select-content {
  width: max-content;
  height: 20px;
  padding: 1.6%;
  border: 1px solid #d6dbed;
  margin: 2% 1% 0;
  background: #ffffff;
  box-shadow: 0 0 8px 0 rgba(72, 119, 236, 0.1);
  border-radius: 4px;
}
.select-content:hover span {
  color: #4877ec;
}
.select-content:hover {
  cursor: pointer;
  background: #f8faff;
  border: 1px solid #3e75f4;
}
.select-text {
  font-size: 15px;
  color: #2e2f36;
  text-align: center;
  font-weight: 400;
}
.select-text-X {
  font-size: 15px;
  color: #4877ec;
  letter-spacing: 0;
  font-weight: 400;
  margin-left: 12px;
  cursor: pointer;
}