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Javascript can be embedded in html, embedded method: 1, the js code is written directly in the script tag pair, the syntax "js code"; 2, the js code is written in the ".js" file, using the src attribute of the script tag into html.

The operating environment of this tutorial: windows7 system, javascript1.8.5 version, Dell G3 computer.

JavaScript code works with HTML+CSS to achieve the effect of dynamic web pages, so how to embed JavaScript code into HTML code? let's explain three ways to introduce it.

Three ways of embedding JavaScript in HTML

1. Use. Label pair

Write the js code directly in the script tag pair. The script tag can be written in either the head tag or the body tag. Note:

If the JavaScript code is placed in a tag: it is mainly used to complete the required background tasks

If the JavaScript code is placed in a tag: used to display the content.

two。 Bring in external JavaScript files

This approach is generally used in enterprise work, because it ensures that js code and html code are independent and less interfering with each other (low coupling).

The mylife.js file is as follows: write the js code directly, and the js file must not appear again. B tag right!

3. Pseudo-URL introduction

This approach usually appears in the format "_ JavaScript: XXXXX", followed directly by the js code.

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