1.iview分组处理数组，代码如下：
var arr = [{id:"no001", name:"哆啦A梦",age:100},
{id:"no002", name:"海绵宝宝",age:50},
{id:"no001", name:"夏目",age:100},
]
var map = {},
nList = []
for (var i = 0; i < arr.length; i++) {
var item = arr[i]
//如果map没有则在新nList中添加
if (!map[item.id]) {
nList.push({
id: item.id,
data: [item]
})
map[item.id] = item
} else {
//遍历nList
for (var j = 0; j < nList.length; j++) {
var nItem = nList[j]
if (nItem.id == item.id) { //如果有相同的id push
nItem.data.push(item)
break
}
}
}
}
console.info(nList)
效果图如下：
微信图片_20200928221513.png
2.合并相同id的数据并计算score的总和
var arr = [{id:'001',score: 70},
{id:'001',score: 70},
{id:'002',score: 100}]
var res =[];
var narr=[];
var sum = 0
for(var i =0;i<arr.length;i++){
var n = res.indexOf(arr[i].id);
if(n == -1){
res.push(arr[i].id);
narr.push({"id":arr[i].id,score: arr[i].score})
sum = arr[i].score
}else{
narr[n].score = sum +arr[i].score
}
}
console.info(narr)
效果图如下:
微信图片_20200928222240.png
