Javascript 对象与正常函数
//代码开始Javascript 对象与正常函数,javascript,Javascript,//代码开始 function Person(name) { this.name = name; console.log(this.name); //Output 1 console.log(this); //Output 2 } var p1 = new Person("Object_Shashank"); var p2 = Person("Function_Shashank"); //代码结束 p1: 输出1:对象_Shashank 输出2:人{n
function Person(name) {
this.name = name;
console.log(this.name); //Output 1
console.log(this); //Output 2
}
var p1 = new Person("Object_Shashank");
var p2 = Person("Function_Shashank");
//代码结束
p1:
- 输出1:对象_Shashank
- 输出2:人{name:“Object_Shashank”}
- 输出1:功能_Shashank
- 输出2:Window{speechSynthesis:speechSynthesis,caches:CacheStorage,localStorage:Storage,sessionStorage:Storage,webkitStorageInfo:DeprecatedStorageInfo…}
谁能解释一下“p2:Output 2”它打印的是
窗口
对象,因为这个
引用了窗口对象
function Person(name){
this.name=name;
console.log(this.name); //Output 1
console.log(this); //Output 2 <-- this `this` will point to the object it belongs to , which in this case of p1 is Object_Shashank while for p2 is window
}
var p1=new Person("Object_Shashank");
var p2=Person("Function_Shashank"); // Equivalent to p2 = window.Person("Function_Shashank")
职能人员(姓名){
this.name=name;
console.log(this.name);//输出1
console.log(this);//输出2Person()
=window.Person()
您忘记了new
关键字之前的Person
可能重复的谢谢。这很有帮助