左边拖拽到右边数组,左边拖拽到右边，修改右边所有数组中classs =false,拖动当前数据为classs =true,当左边两条相同拖拽到右边时，右边这两条数据的classs都为true了。

   return{
            design :[],
            icon_list:[{
                type:'image',
                icon:'fa fa-picture-o',
                name:'图片',
                content:{
                    image: ''
                },
                classs:false,
                i:''
            },
            {
                type:'text',
                icon:'fa fa-font',
                name:'富文本',
                content:{},
                classs:false,
                i:''
            },
            {
                type:'par',
                icon:'fa fa-bold',
                name:'参数',
                content:{
                  trace:[]
                },
                classs:false,
                i:''
            }]
        }
    }
   
      

           

           {{item.name}}
      

  
  
     

         

             

                 

                 {{item.type+index}}`请输入代码`
                 
                 
             

         

     

   
   
       editSlice(it,index){
          var _this = this;
          for (var i in this.slices) {
            _this.slices[i].classs = false;
            _this.slices[i].i = i;
            console.log('classs',_this.slices[i].classs)
          };
          console.log('222',this.slices);
          console.log('i',index)
          it.classs = true;
          //this.$set(it, 'classs', true);
          //this.design = item;
          console.log('222',this.slices);

        },
        log: function (e){
          this.editSlice(this.slices[e.added.newIndex],e.added.newIndex);
        }