what is this in javascript
// this = current execution context (window in browser, global in nodejs)
console.log(this) // window object
function foo () {
console.log(this); // object calling this function
}
foo(); // undefined
o={ foo }
o.foo(); // 'o' object loggeduse of this keyword in js
The JavaScript this keyword refers to the object it belongs to.
It has different values depending on where it is used: In a method,
this refers to the owner object. Alone, this refers to the global
object.javascript this
// In web browsers, the window object is also the global object:
console.log(this === window); // true
a = 37;
console.log(window.a); // 37
this.b = "MDN";
console.log(window.b) // "MDN"
console.log(b) // "MDN"js this in object
var wF = {
w : 560,
h : function() { return (312 - 42) / (560 / this.w) + 42; }
};
alert(wF.h())this keyword in javascript
"use strict";
function myFunction() {
return this;
}this javascript
// Im Webbrowser ist das window Objekt das globale Objekt:
console.log(this === window); // true
a = 37;
console.log(window.a); // 37
this.b = "MDN";
console.log(window.b); // "MDN"
console.log(b); // "MDN"Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
