Found a total of 6207 related content
What is this? An in-depth analysis of this in JavaScript
Article Introduction:What is this? The following article will introduce you to this in JavaScript, and talk about the differences between this in different calling methods of functions. I hope it will be helpful to you!
2022-08-04
comment 0
1334
What are the usages of this in javascript?
Article Introduction:Usage of this in JavaScript: 1. Use this to refer to the global object; 2. Use this to refer to the superior object; 3. Use this to refer to the new object; 4. Use this to refer to the first parameter.
2021-04-09
comment 0
2210
What are the uses of this in javascript
Article Introduction:Usage of this in JavaScript: 1. Use this to refer to the global object, the code is [alert(this.x)]; 2. Use this to refer to the superior object; 3. Use this to refer to the new object.
2021-04-06
comment 0
3132
What does this mean in javascript
Article Introduction:The Chinese meaning of this is "current; this". It is a pointer variable in JavaScript, which points to the running environment of the current function. When the same function is called in different scenarios, the pointer of this will change, but it will always point to the real caller of the function in which it is located; if there is no caller, this will point to the window.
2021-06-30
comment 0
5554
What are the ways to use this in javascript?
Article Introduction:How to use this in JavaScript: 1. When the function has an object, it points to the object; 2. When the function does not have an object, it points to the global object; 3. This in the constructor points to the new object.
2021-03-31
comment 0
1744
Detailed explanation of this in JavaScript arrow function
Article Introduction:The arrow function in JavaScript is a relatively new syntax. It does not have its own this keyword. On the contrary, the this of the arrow function points to the scope object containing it. The impacts are: 1. This in the arrow function is static; 2. Arrow Functions cannot be used as constructors; 3. Arrow functions cannot be used as methods.
2024-01-25
comment 0
579
html this usage
Article Introduction:HTML This is a method used in HTML and JavaScript that allows developers to easily manipulate and modify HTML elements using JavaScript. In this article, we’ll take a deep dive into the use of HTML This and how you can leverage it in web development. What is HTML This? HTML This is a JavaScript library that allows developers to easily operate on HTML nodes. HTML This is mainly allowed by
2023-05-27
comment 0
360
What is the magical this in JavaScript?
Article Introduction:The this keyword is one of the most complex mechanisms in JavaScript. It is a very special keyword that is automatically defined in the scope of all functions. But even very experienced JavaScript developers have a hard time telling what exactly it points to.
2021-09-19
comment 0
1583
One article to understand the this pointing problem in JavaScript
Article Introduction:This article brings you relevant knowledge about JavaScript, which mainly introduces the related issues pointed by this. This means "this, current" and is a pointer variable that dynamically points to the running environment of the current function. Let’s take a look at it together, I hope it will be helpful to everyone.
2022-11-30
comment 0
2668
The role of this in js
Article Introduction:In JavaScript, this is a special keyword that points to the context object of the currently executing code: Function context: this points to the global object window. Method context: this points to the object on which the method is called. Constructor context: this points to the new object being created. Event listener context: this points to the element that triggered the event. Arrow function context: this inherits this from the parent scope.
2024-05-06
comment
538
What is the usage of this in javascript
Article Introduction:Usage of this: 1. In pure function calls, this is used to represent the global object; 2. When the function is called as an object method, this is used to represent the superior object; 3. When called as a constructor, this is used to represent the new object; 4. When apply is called, this is used to represent the first parameter of the apply() function.
2021-04-26
comment 0
6221
Where does JavaScript this point to?
Article Introduction:This points to: 1. Ordinary functions or as object attributes, pointing to the window object; 2. In event binding, pointing to the element of the bound event; 3. In the constructor, pointing to the instance of the class; 4. In the arrow function, pointing to the nearest This in the parent context; 5. In call/apply/bind, points to the first parameter passed in.
2021-06-15
comment 0
3284
js中this的工作原理
Article Introduction:JavaScript 中的 this 关键字表示执行代码的上下文对象,其值取决于函数调用方式和执行环境:普通函数调用:this 指向全局对象。对象方法调用:this 指向调用方法的对象。回调函数调用:this 的值取决于回调函数的调用方式。箭头函数:this 继承调用它的函数的 this。严格模式:this 始终指向 undefined。非严格模式:如果没有找到有效的 this 值,则指向全局对象。
2024-05-13
comment
835
Explore how this is used in jQuery
Article Introduction:jQuery is a JavaScript library widely used in front-end development. It simplifies the process of writing JavaScript code and improves development efficiency. In jQuery, the this keyword is a very important concept, it represents the currently selected element. This article will delve into the application scenarios of this in jQuery and illustrate it with specific code examples. 1. The basic usage of this In jQuery, this represents the currently selected element, usually used
2024-02-24
comment
634
The meaning of $(this) in jquery
Article Introduction:The meaning of $(this) in jquery jquery is a popular javascript library that provides developers with many convenient api functions, making web development easier and more efficient. $(this) is the most commonly used function in jquery, and it is very important for understanding the use of jquery. This article will explain in detail the usage and significance of the $(this) function. $(this) is a keyword in jquery, which represents the element currently being operated on. In jquery, th
2023-05-24
comment 0
1990
There are several situations where this in js points to
Article Introduction:In JavaScript, the pointing types of this include: 1. Global object; 2. Function call; 3. Constructor call; 4. Event handler; 5. Arrow function (inheriting outer this). Additionally, you can explicitly set what this points to using the bind(), call(), and apply() methods.
2024-05-06
comment
137
What does this mean in javascript
Article Introduction:In js, this means "this; current" and is a pointer variable that dynamically points to the running environment of the current function. When the same function is called in different scenarios, the pointer of this may also change, but it always points to the real caller of the function in which it is located; if there is no caller, it points to the global object window.
2021-10-20
comment 0
8855
The difference between jquery this and $(this)
Article Introduction:The difference between jquery this and $(this) is: 1. this is an html element, and $this is just a variable name. Add $ to indicate that it is a jquery object; 2. $(this) is a conversion, which can be used to convert this The represented dom object is converted into a jquery object.
2020-12-03
comment 0
1848