标签：for index 数组 参数 turn grep == 用法 price
1、将数组对象arr按照num倒序排序。
var arr = [
{name:‘A‘,num:4},
{name:‘G‘,num:3},
{name:‘V‘,num:5},
{name:‘A‘,num:2},
{name:‘X‘,num:9},
{name:‘R‘,num:6},
{name:‘N‘,num:undefined},
]
function compare(property){ // 该函数用来接收对象属性名 return function(a,b){ var value1 = a[property]; var value2 = b[property]; return value2 - value1; } }
arr.sort(compare(‘num‘))；// 用法：sort方法接收这个函数作为参数
2、$.grep 处理数据
（1）数据
data.data = [
{
BUY_PRICE: -500,
BUY_QTY: 30,
GOODS_ID: 292,
SKU_ID: 52,
SKU_NAME: "液氯(1)",
SKU_PRICE: 0,
delivery_fee: 0,
goods_sku_price: 950
},
{
BUY_PRICE: -500,
BUY_QTY: 52,
GOODS_ID: 292,
SKU_ID: 20,
SKU_NAME: "液氯(瓶车)",
SKU_PRICE: 0,
delivery_fee: 0,
goods_sku_price: 950
},
{
BUY_PRICE: -500,
BUY_QTY: 21,
GOODS_ID: 292,
SKU_ID: 52,
SKU_NAME: "液氯(1)",
SKU_PRICE: 0,
delivery_fee: 0,
goods_sku_price: 950
},
{
BUY_PRICE: -500,
BUY_QTY: 30,
GOODS_ID: 292,
SKU_ID: 20,
SKU_NAME: "液氯(瓶车)",
SKU_PRICE: 0,
delivery_fee: 0,
goods_sku_price: 950
},
{
BUY_PRICE: -500,
BUY_QTY: 21,
GOODS_ID: 292,
SKU_ID: 21,
SKU_NAME: "液氯(2)",
SKU_PRICE: 0,
delivery_fee: 0,
goods_sku_price: 950
}
]
（2）处理
var arr = res.data.data;
var all = [];
var nameArrO = [],nameArrN = [];
for(var i=0;i<arr.length;i++){
nameArrO.push(arr[i].SKU_ID)
}
for(var i = 0; i < nameArrO.length; i++){
if(nameArrN.indexOf(nameArrO[i]) == -1){
nameArrN.push(nameArrO[i]);
}
}
for(var i = 0; i < nameArrN.length; i++){
var item = $.grep(arr, function(num,index) {
return ( num.SKU_ID == nameArrN[i] );
});
var totalNum = 0,totalPrice = 0;
for(var j=0;j<item.length;j++){
totalNum+=item[j].BUY_QTY;
totalPrice+=item[j].BUY_QTY*(item[j].BUY_PRICE+item[j].delivery_fee1);
}
all.push({
name:item[0].SKU_NAME,
id:item[0].SKU_ID,
totalNum:totalNum,
totalPrice:totalPrice,
data:item
})
}
（3）处理后返回的数据
all = [
{
data: [
{
...data.data
},
]
id: 20,
name: "液氯(瓶车)",
totalNum: 72,
totalPrice: -6780,
},
{
data: [
{
...data.data
},
]
id: 52,
name: "液氯(1)",
totalNum: 72,
totalPrice: -6780,
},
{
data: [
{
...data.data
},
]
id: 21,
name: "液氯(2)",
totalNum: 72,
totalPrice: -6780,
}
]
标签：for index 数组 参数 turn grep == 用法 price
原文地址：https://www.cnblogs.com/panpan-1023/p/10861131.html
