How to edit javascript

As a programming language widely used in web development, JavaScript has become one of the essential skills for many front-end engineers. In JavaScript, editing is an inevitable part of the process, which allows us to better manage and process web content and interactions. Let's take a look at how to edit JavaScript.

1. Editor Overview

An editor is a computer software used to write, modify and edit source code. In JavaScript, we can use a variety of editors, such as Sublime Text, Atom, Visual Studio Code, etc. Here is a brief introduction to Visual Studio Code (VS Code).

VS Code is a free and open source editor developed by Microsoft. It supports a large number of programming languages ​​and provides rich plug-ins and functions. VS Code has a good user experience and simple operation, and has been widely welcomed.

2. Basic configuration of the editor

In the process of using VS Code to edit JavaScript, some basic configurations are essential. They can help us do it faster and more efficiently. programming. The following are some recommended configurations:

1. Install the compiler

When executing JavaScript code, you need to rely on the Node.js environment. Therefore, we need to install Node.js on our computer.

After installing Node.js, we need to set the terminal's default integration environment to Node.js in VS Code. We can achieve this through the following steps:

Click "View", select "Integrated Terminal", enter node -v and npm -v in the terminal, if the version number can be displayed correctly, the environment configuration is successful.

2. Installing plug-ins

By installing plug-ins, our programming efficiency can be greatly improved. The following are some commonly used plug-ins:

• Debugger for Chrome: debug JavaScript code through the Chrome browser.
• ESLint: Used for syntax checking and code style checking, which can help us standardize the code.
• Bracket Pair Colorizer 2: Plug-in for pairing brackets next to analysis, making it easier for us to read the code.
• IntelliSense for CSS (SCSS) class names in HTML: Used for HTML and CSS code hints and code completion tools.

3. Set themes and fonts

In order to make our editor more beautiful and easier to read, we can set themes and fonts. We can set this in the "Appearance" menu bar.

3. JavaScript code editing

When we are ready to edit JavaScript code, we need to master some basic methods and techniques:

1. Code automatic completion

By setting VS Code, we can make the editor predict the code content we want to enter. For example, when typing "for", the editor will automatically prompt the template of the "for" loop.

2. Code Snippets

Code snippets are a defined set of code blocks that can be used to speed up code entry. By entering the corresponding keywords in the editor, we can quickly obtain predefined code snippets.

3. Code formatting

Code formatting can help us unify the format of each code file and make the code style clear and standardized. In most cases, we only need to format it with one click.

4. Code Comments

Comments refer to adding some text to the code to explain, describe or provide guidance. It can improve the efficiency of code reading and is also one of the essential skills for good programmers.

5. Multi-line editing

The multi-line editing function allows us to edit multiple lines of code in a text block at the same time and complete it in one operation. This is a quick way to batch edit, which can save us a lot of time and energy.

4. Summary

JavaScript editing is an essential skill for front-end engineers. Whether it is basic code writing or advanced code processing, we need to have good editing skills. . Through the above introduction, readers can understand how to edit JS code in Visual Studio Code and learn some basic editing skills and methods. I believe this will help readers write JavaScript more clearly, legibly, efficiently and conveniently.

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