方法：

// 将相同name的进行分组
          for (let i = 0; i < newArr1.length; i++) {//newArr1为原始json数据
            // 利用some函数来区分是否相同
              !obj.some(item => item.name === newArr1[i].name &&
                item.width === newArr1[i].width &&
                item.height === newArr1[i].height &&
                item.widthDeviation === newArr1[i].widthDeviation &&
                item.heightDeviation === newArr1[i].heightDeviation &&
                item.tempered === newArr1[i].tempered &&
                item.floorNum === newArr1[i].floorNum &&
                item.processRequirements === newArr1[i].processRequirements &&
                item.remark === newArr1[i].remark
              obj.push(newArr1[i])
              arr.push({
                gname: newArr1[i].name,
                gwidth: newArr1[i].width,
                gheight: newArr1[i].height,
                gwidthDeviation: newArr1[i].widthDeviation,
                gheightDeviation: newArr1[i].heightDeviation,
                gtempered: newArr1[i].tempered,
                gfloorNum: newArr1[i].floorNum,
                gprocessRequirements: newArr1[i].processRequirements,
                gremark: newArr1[i].remark,
                data: [newArr1[i]]
            } else {
              // 把那些和键值相同的条目放入分组(玻璃名)
              for (let k = 0; k < arr.length; k++) {
                if (arr[k].gname === newArr1[i].name &&
                  arr[k].gwidth === newArr1[i].width &&
                  arr[k].gheight === newArr1[i].height &&
                  arr[k].gwidthDeviation === newArr1[i].widthDeviation &&
                  arr[k].gheightDeviation === newArr1[i].heightDeviation &&
                  arr[k].gtempered === newArr1[i].tempered &&
                  arr[k].gfloorNum === newArr1[i].floorNum &&
                  arr[k].gprocessRequirements === newArr1[i].processRequirements &&
                  arr[k].gremark === newArr1[i].remark
                  arr[k].data.push(newArr1[i])
          }

const arr2 = []
        var newArr1s = []
        // 循环分组数据即可，然后针对特定项目做处理
        // 注意点在于三元表达式，因为数组必须有两个才能用reduce函数（缩减函数）
        arr.forEach(item => {
          console.log(`j88888---`, item)
          arr2.push({
            // name: item.data.map(item => item.name).join(','),
            name: item.gname,
            width: item.gwidth,
            height: item.gheight,
            widthDeviation: item.gwidthDeviation,
            heightDeviation: item.gheightDeviation,
            number: item.data.length > 1 ? item.data.map(item => item.number).reduce((pre, next) => pre + next) : item.data[0].number,//此处为相加方法
            price: item.data[0].price,
            tempered: item.gtempered,
            floorNum: item.gfloorNum ? item.gfloorNum : item.data.map(item => item.floorNum).join(','),
            processRequirements: item.gprocessRequirements ? item.gprocessRequirements : item.data.map(item => item.processRequirements).join(','),//此处为字符串拼接方法
            remark: item.gremark ? item.gremark : item.data.map(item => item.remark).join(',')
            // tempered: this.sss,
            // name: item.data[0].name
        })

来看对比图：
合并前：

合并后：

需要的可直接贴代码。