修改json数据机构

[___紫菜]

var datasss = [
	{"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"wuhuameat.jpg"},
	{"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"Chickenwings.jpg"},
	{"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"zhouheiya.jpg"},
	{"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"steak.jpg"},
	{"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"luyu.jpg"},
	{"orderid":2,"payprice":27.7,"orderdate":"2019-03-28 14:54:16","statusname":"待付款","img":"qingzao.jpg"},
	{"orderid":2,"payprice":27.7,"orderdate":"2019-03-28 14:54:16","statusname":"待付款","img":"mangguo.jpg"},
	{"orderid":2,"payprice":27.7,"orderdate":"2019-03-28 14:54:16","statusname":"待付款","img":"boluo.jpg"}
]

转成

var datasss = [
	{"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":["wuhuameat.jpg","Chickenwings.jpg","zhouheiya.jpg","steak.jpg","luyu.jpg",]},
	{"orderid":2,"payprice":27.7,"orderdate":"2019-03-28 14:54:16","statusname":"待付款","img":["qingzao.jpg","mangguo.jpg","boluo.jpg"]}
]

[麦草CMS]

var cache, newData = [];
datasss.forEach( function(value){
if(typeof cache === "undefined" || (typeof cache !== "undefined" && value != cache )){
newData.push(value);
cache = value;
}
});

[麦草CMS]

var cache, newData = [];
datasss.forEach( function(value){
value = JSON.stringify(value);
if(typeof cache === "undefined" || (typeof cache !== "undefined" && value != cache )){
newData.push(value);
cache = value;
}
});

[麦草CMS]

对不起，没看到后面影藏的内容不一样，以为去掉相同的。

[___紫菜]

引用 3 楼 麦草CMS 的回复:

对不起，没看到后面影藏的内容不一样，以为去掉相同的。

[Hello World,]

orderid应该是不重复的，用来作key处理：

    var datasss = [
        { "orderid": 1, "payprice": 140, "orderdate": "2019-03-21 16:30:22", "statusname": "待付款", "img": "wuhuameat.jpg" },
        { "orderid": 1, "payprice": 140, "orderdate": "2019-03-21 16:30:22", "statusname": "待付款", "img": "Chickenwings.jpg" },
        { "orderid": 1, "payprice": 140, "orderdate": "2019-03-21 16:30:22", "statusname": "待付款", "img": "zhouheiya.jpg" },
        { "orderid": 1, "payprice": 140, "orderdate": "2019-03-21 16:30:22", "statusname": "待付款", "img": "steak.jpg" },
        { "orderid": 1, "payprice": 140, "orderdate": "2019-03-21 16:30:22", "statusname": "待付款", "img": "luyu.jpg" },
        { "orderid": 2, "payprice": 27.7, "orderdate": "2019-03-28 14:54:16", "statusname": "待付款", "img": "qingzao.jpg" },
        { "orderid": 2, "payprice": 27.7, "orderdate": "2019-03-28 14:54:16", "statusname": "待付款", "img": "mangguo.jpg" },
        { "orderid": 2, "payprice": 27.7, "orderdate": "2019-03-28 14:54:16", "statusname": "待付款", "img": "boluo.jpg" }
    ]
    var items = {};
    datasss.forEach(function (item) {
        if (items[item.orderid]) {
            items[item.orderid].img.push(item.img);
        } else {
            var img = item.img;
            delete item.img;
            item.img = [];
            item.img.push(img);
            items[item.orderid] = item;
        }
    });
    console.log(items);

[麦草CMS]

var orderid, newData = [], img;
datasss.forEach( function(value){
if(typeof orderid === "undefined" || (typeof orderid !== "undefined" && value.orderid != orderid )){
img = value.img;
newData.push(value);
orderid = value.orderid
}else{
newData[newData.length - 1].img.push(value.img);
}
});

[麦草CMS]

var orderid, newData = [], img;
datasss.forEach( function(value){
if(typeof orderid === "undefined" || (typeof orderid !== "undefined" && value.orderid != orderid )){
img = value.img;
value.img = [img];
newData.push(value);
orderid = value.orderid
}else{
newData[newData.length - 1].img.push(value.img);
}
});

[風灬雲]

var datasss = [ {"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"wuhuameat.jpg"}, {"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"Chickenwings.jpg"}, {"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"zhouheiya.jpg"}, {"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"steak.jpg"}, {"orderid":1,"payprice":140,"orderdate":"2019-03-21 16:30:22","statusname":"待付款","img":"luyu.jpg"}, {"orderid":2,"payprice":27.7,"orderdate":"2019-03-28 14:54:16","statusname":"待付款","img":"qingzao.jpg"}, {"orderid":2,"payprice":27.7,"orderdate":"2019-03-28 14:54:16","statusname":"待付款","img":"mangguo.jpg"}, {"orderid":2,"payprice":27.7,"orderdate":"2019-03-28 14:54:16","statusname":"待付款","img":"boluo.jpg"} ] var res=[]; datasss.forEach(e=>{ if(!res.some(f=>{ if(f.orderid===e.orderid){ f.img.push(e.img) } return f.orderid===e.orderid })){ e.img=[e.img] res.push(e) } }) console.log(res)