Instructions for use when runnable code cannot be executed normally_Basic knowledge

But with some effects, external JS code needs to be introduced (external js is generally frameworks such as jquery or some js codes that need to be introduced. In fact, as long as there is
in the runnable code, it is imported js from outside), resulting in many people who are not very familiar with it. Friends who code, I feel that this code is wrong and cannot be executed. I will briefly explain it here so that everyone will not understand the error.

Here is an article introducing external Js as an example. http://www.jb51.net/article/23280.htm

After opening it, I found the following code

Then after clicking to run the code, I found that the page was not It cannot be executed as described. In fact, when running the code here, no external js is loaded. This is jquery. Just right-click to refresh, or press the shortcut key F5.


The following is a supplementary explanation:
Many friends look at our code and find that our code is not highlighted like the code on other websites. In fact, once Batch modification is troublesome. Secondly, many friends may not be able to copy the code normally. If you like highlighting, you can copy the code to some editors or tools with formatting codes to achieve this.

Script House has compiled some js or other language formatting tools for you on the right side of the article.

You can choose according to your needs. CSS online compression and formatting (Chinese)
css formatting tool (English)
CSS shaping and formatting
JavaScript formatting tool
jsbeautifier Js formatting tool (English)
php formatting tool (English)
HTML/JS mutual conversion tool
javascript pack encryption and compression tool
JS Minifier compression
JS obfuscation tool
Online JS script validator error
JavaScript regular expression online testing tool