目录
1.遍历对象属性
①for (var key in obj){}
遍历对象的可枚举属性,包括自有属性、继承自原型的属性(不管是值还是函数);
②Object.keys(obj)
遍历对象的自有属性,且是可枚举的,不包括继承的;
③obj.has
遍历对象的自有属性,不管是枚举的还是非枚举的,都可以,不包括继承的;
// An highlighted block
let obj={"name":"aiden","age":25};
Object.defineProperty(obj,"sex",{value:"25",enumerable:false});
Object.prototype.property1=function(){console.log("name is aiden")};
Object.prototype.property2=3;
for (var key in obj){
console.log(key)
}
//输出name,age,property1,property2
var result1=Object.keys(obj)
//输出name,age
var result2=Object.getOwnPropertyNames(obj)
//输出name,age,sex