下面前端入门建站教程为大家介绍一下从数据获取相同数据生成多维数组等数组相关j

//从数据获取相同数据生成多维数组
      let tableList = {},
        tableNewsList = [];
      for (let i = 0; i < this.list.length; i++) {
        let tableListArr = this.list[i];
        if (!tableList[tableListArr.hospital_name]) {
          tableNewsList.push({
            Id: tableListArr.Id,
            hospital_name: tableListArr.hospital_name,
            data: [tableListArr]
          });
          tableList[tableListArr.hospital_name] = tableListArr;
        } else {
          for (let j = 0; j < tableNewsList.length; j++) {
            let tableListArr2 = tableNewsList[j];
            if (tableListArr2.hospital_name == tableListArr.hospital_name) {
              tableListArr2.data.push(tableListArr);
              break;
            }
          }
        }
      }
      //获取合计，生成数组
      let listCount = 0
      let listCountArr = []
      for (let k = 0; k < tableNewsList.length; k++) {
        for (let l = 0; l < tableNewsList[k].data.length; l++) {
          listCount += parseInt(tableNewsList[k].data[l].info_cnt)
        }
        listCountArr.push(listCount)
      }

      //自定义合计数组
      const listCountArr2 = []
      listCountArr.forEach(function (item) {
        listCountArr2.push({
          Id: item,
          data: {
            Id: item,
            hospital_name: '合计',
            info_cnt: item
          }
        })
      });
      //自定义列表数组和合计数组
      var length = Math.min(tableNewsList.length, listCountArr2.length)
      var result1 = []
      var result2 = []
      for (var i = 0; i < length; i++) {
        result1.push(tableNewsList[i].data)
        result2.push(listCountArr2[i].data)
      }
      //合并列表数组和合计数组
      var typesList = []
      var typesList2 = []
      for (let j = 0; j < result1.length; j++) {
        typesList = result1[j].concat(result2[j]);
        typesList2.push(typesList)

      }
      //获取数组赋值
      var newsListArr = []
      for (let k = 0; k < typesList2.length; k++) {
        for (let l = 0; l < typesList2[k].length; l++) {
          newsListArr.push(typesList2[k][l])
        }
      }

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