js 对象、数组对象覆盖

1.数组和数组对象覆盖合并
var arrObject = [
{id:1,name: 'zs'},
{id:2,name:'ls'},
{id:3,name:'we'},
];
var object = {id:1,name:'ww'};
arrObject .forEach((val, key) => {
 if (val.id=== object.id) {
   Object.assign(val, object);
 }
})
console.log(arrObject)// [{"id":1,"name":"ww"},{"id":2,"name":"ls"},{"id":3,"name":"we"}]

2.数组对象去重
var dataObjectArray = [
{id:1,name:'zs'},
{id:2,name: 'ww'},
{id:1,name:'ls'},
{id:3,name:'ls'},
{id:4,name:'we'},
{id:2,name:'wmz'}
];
//使用obj来记录push过的值

var obj = {};

var result = [];

for(var i =0; i < dataObjectArray.length; i++){ console.log(obj)//{},{"1":true},{"1":true,"2":true},{"1":true,"2":true},{"1":true,"2":true,"3":true},{"1":true,"2":true,"3":true,"4":true} if(!obj[dataObjectArray[i].name]){ result.push(dataObjectArray[i]); obj[dataObjectArray[i].name] = true; } } console.log(result)// [{"id":1,"name":"zs"},{"id":2,"name":"ww"},{"id":3,"name":"ls"},{"id":4,"name":"we"}]