键值对转JSON

原数据:

(201) [empty, 0, 1, empty × 186, 2, 3, 4, 5, 6, 7, empty × 4, 8, 9, __ob__: Observer]
1: 0
2: 1
189: 2
190: 3
191: 4
192: 5
193: 6
194: 7
199: 8
200: 9

转成JSON格式:

{"1":0,"2":1,"189":2,"190":3,"191":4,"192":5,"193":6,"194":7,"199":8,"200":9}

方法

原数据:this.tableContent   

 let order = {}
      this.tableContent.map((item,index)=>{
        order[index] = item
      })
     转后为order