elementui-表格单行可拖动

需求:table表格单行可拖动

单行表格可拖动到指定容器并渲染

可拖动用draggable属性，遍历el-table__row，给他们加上draggable，让其可拖动

export default {
    data() {
      return {
        count: 0,
        tableData: [
          {
            date: "2016-05-03",
            name: "王小虎",
            address: "上海市普陀区金沙江路 1518 弄",
          },
          {
            date: "2016-05-02",
            name: "王小虎",
            address: "上海市普陀区金沙江路 1518 弄",
          },
          {
            date: "2016-05-04",
            name: "王小虎",
            address: "上海市普陀区金沙江路 1518 弄",
          },
          {
            date: "2016-05-01",
            name: "王小虎",
            address: "上海市普陀区金沙江路 1518 弄",
          },
          {
            date: "2016-05-08",
            name: "王小虎",
            address: "上海市普陀区金沙江路 1518 弄",
          },
          {
            date: "2016-05-06",
            name: "王小虎",
            address: "上海市普陀区金沙江路 1518 弄",
          },
          {
            date: "2016-05-07",
            name: "王小虎",
            address: "上海市普陀区金沙江路 1518 弄",
          },
        ],
        tableData1: [],
        cache: null,
        control: null,
        showbox:true
      };
    },
    created() {
      this.tableData1 = this.tableData;
    },
    mounted() {
      let s = document.getElementsByClassName("el-table__row");
      let t = document.getElementsByClassName("frame")[0];
      for (let i = 0; i < s.length; i++) {
        s[i].setAttribute("draggable", true);
      }
  
      window.addEventListener(
        "dragend",
        (e) => {
          e.path[0].click();
          e.dataTransfer.dropEffect = 'move'
          console.log(e); 
        },
        true
      );
      t.addEventListener(
        "dragenter",
        (e) => {
          this.control = true;
        },
        true
      );
      t.addEventListener(
        "dragleave",
        (e) => {
          if (e.fromElement != null) {
            this.control = false;
          } else {
            this.control = true;
          }
        },
        true
      );
    },
    methods: {
      searchInfo(e) {
        let count = this.clone(e);
        if (this.control) {
          if (this.cache != null) {
            for (let i in this.cache) {
              delete this.cache[i];
            }
            this.cache = count;
            this.showbox = false
          } else {
            this.cache = count;
            this.showbox = false
          }
        }
        this.control = false;
        console.log(this.cache);
      },
      //定义检测数据类型的功能函数
      checkedType(target) {
        return Object.prototype.toString.call(target).slice(8, -1);
      },
      //实现深度克隆---对象/数组
      clone(target) {
        //判断拷贝的数据类型
        //初始化变量result 成为最终克隆的数据
        let result,
          targetType = this.checkedType(target);
        if (targetType === "Object") {
          result = {};
        } else if (targetType === "Array") {
          result = [];
        } else {
          return target;
        }
        //遍历目标数据
        for (let i in target) {
          //获取遍历数据结构的每一项值。
          let value = target[i];
          //判断目标结构里的每一值是否存在对象/数组
          if (
            this.checkedType(value) === "Object" ||
            this.checkedType(value) === "Array"
          ) {
            //对象/数组里嵌套了对象/数组
            //继续遍历获取到value值
            result[i] = this.clone(value);
          } else {
            //获取到value值是基本的数据类型或者是函数。
            result[i] = value;
          }
        }
        return result;
      },
    },
  };