json对象 同名合并一个数组

<script>

let temp = [

  { id: "1", label: "1Msjjs-10-01", num: 10, name: "564" },

  { id: "2", label: "1Msjjs-20-01", num: 10, name: "789" },

  { id: "3", label: "1Msjjs-20-01", num: 20, name: "564" },

  { id: "4", label: "1Msjjs-10", num: 20, name: "564" },

  { id: "5", label: "1Msjjs-14", num: 20, name: "564" },

  { id: "6", label: "1Msjjs-15", num: 20, name: "564" },

  { id: "7", label: "1Msjjs-16", num: 20, name: "564" },

  { id: "8", label: "1Msjjs-16", num: 40, name: "564" },

  { id: "9", label: "1Msjjs-10-01", num: 20, name: "564" },

]

let arr = []

let obj = []

// 将相同label的进行分组

for (let i = 0; i < temp.length; i++) {

  // 利用some函数来区分是否相同

  if (!obj.some(item => item.label === temp[i].label)) {

    obj.push(temp[i])

    arr.push({

      gname: temp[i].label,

      data: [JSON.stringify(temp[i])],

    })

  } else {

    // 把那些和键值相同的条目放入分组

    for (let k = 0; k < arr.length; k++) {

      if (arr[k].gname === temp[i].label) {

        arr[k].data.push(JSON.stringify(temp[i]))

      }

    }

  }

}

</script>