// 将一个JSON数组[{},{},{}]按一定规则合并到另一个JSON数组[{},{},{}] // Object.assign方法的第一个参数是目标对象，后面的参数都是源对象。 var list1 = [{id:2,name:'aa'},{id:4,name:'bb'},{id:1,name:'cc'}]; var list2 = [{id:2,age:10,sex:'男'},{id:1,age:18,sex:'男'},{id:4,age:16,sex:'女'}]; var arr = []; var list = list1.map((item1)=> { arr = list2.filter((item2)=>{ return item2.id == item1.id; }); console.log(arr); console.log( Object.assign(item1,arr[0]) ); return Object.assign(item1,arr[0] ); }); console.log(list1);// [ {id: 2,name: "aa",age: 10,sex: "男"},{id: 4,name: "bb",age: 16,sex: "女"},{id: 1,name: "cc",age: 18,sex: "男"}] console.log(list);// [ {id: 2,name: "aa",age: 10,sex: "男"},{id: 4,name: "bb",age: 16,sex: "女"},{id: 1,name: "cc",age: 18,sex: "男"}]
// index索引一一对应 var list3 = [{id:2,name:'aa'},{id:4,name:'bb'},{id:1,name:'cc'}]; var list4 = [{id:2,age:10,sex:'男'},{id:4,age:16,sex:'女'},{id:1,age:18,sex:'男'}]; var list5 = list3.map((item1,index) => { // 如果希望合并后返回一个新对象，可以改写上面函数，对一个空对象合并。 console.log( Object.assign({},item1,list4[index]) ); return Object.assign({},item1,list4[index] ); }); console.log(list3);//[{id:2,name:'aa'},{id:4,name:'bb'},{id:1,name:'cc'}] console.log(list5);// [ {id: 2,name: "aa",age: 10,sex: "男"},{id: 4,name: "bb",age: 16,sex: "女"},{id: 1,name: "cc",age: 18,sex: "男"}]
转载于:https://www.cnblogs.com/jianglibaizhi/p/10185490.html
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