Javascript restricted text box input content code sharing (Class 3) _ javascript tips-js tutorial

This article mainly introduces three types of JavaScript restricted text box input content Code. For more information, see the JavaScript restricted text box input code below.

 
 
 
 
 
 
 
Try it!
Enter a number or letter:
Enter a number. Only numbers are allowed.:
Enter Chinese characters. Only Chinese characters can be entered.:

Run:

I would like to add the following:

Only two digits (numbers and Chinese characters) can be entered after the decimal point. Letters and operator numbers cannot be entered:

Only numeric code can be entered in the text box (decimal point cannot be entered)

In fact, other content can be restricted. For example, only letters are allowed. You can try other content.

The above is the JavaScript restricted text box input content code shared for everyone