js对象替换键值名称

将obj中的id和name字段替换分别替换成为“@id”，“@name”

代码如下：

let obj = [{id:1,name:"张三"},{id:2,name:"李四"}].map(function (item) {
    return{
        "@id":item.id,
        "@name":item.name
    }
})

对于对象

let obj = {
    id:1,
    name:"张三",
    age:20,
    grade:{
        Math :90,
        English :80
    }
}

例如：替换obj中grade属性，将Math替换Chinese，将English替换成Chemistry

完整代码为：

let obj = {
    id:1,
    name:"张三",
    age:20,
    grade:{
        Math :90,
        English :80
    }
}

obj.grade["Chinese"] = obj.grade.Math;
obj.grade["Chemistry"] = obj.grade.English;
delete obj.grade.Math;
delete obj.grade.English;
console.log(obj);       //{ id: 1,name: ‘张三‘,age: 20,grade: { Chinese: 90, Chemistry: 80 } }

原文地址：https://www.cnblogs.com/DonaHero/p/9911004.html