". JavaScript cannot run alone and can only be executed in the host environment; usually JavaScript scripts implement their functions by placing them in HTML. There are two ways to import JS into HTML: 1. Use the "" statement to embed JS code in the HTML page; 2. In HTML, introduce external JS script files through the src attribute of the script tag.">
The tag used by javascript is "" statement to embed JS code in the HTML page; 2. In HTML, introduce external JS script files through the src attribute of the script tag .
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
The tag used by javascript is "
JavaScript is a scripting language that cannot be run independently like an exe program and can only be executed in the host environment. Usually JavaScript scripts realize their functions by embedding them in HTML.
Two methods to import JavaScript into HTML documents
Method 1. Embed JavaScript code in HTML documents
To embed JavaScript scripts in HTML pages, you need to use the
Write JavaScript code between .
第一个JavaScript程序
Method 2: Introducing external JavaScript code script files into HTML documents
JavaScript programs can not only be placed directly in HTML documents , or placed in a JavaScript script file. JavaScript script files are text files with the extension.js
and can be edited using any text editor. JavaScript files can then be imported into HTML pages using the
Note:The
Note:
Commonly used text editors include Notepad in Windows systems, Vim, Sublime Text, Notepad, etc. in Linux systems. For beginners, it is recommended to use a text editor to write JavaScript code first, which will help us remember JavaScript syntax, keywords, functions, etc. When it comes to the actual development stage, you can choose some more professional code editors, such as Visual Studio Code (referred to as "VS Code"), WebStorm (paid), Atom, etc., which can improve development efficiency. 【Related recommendations:javascript video tutorial,programming video】
The above is the detailed content of What tags does javascript use?. For more information, please follow other related articles on the PHP Chinese website!