Code example sharing for JS verification input box (letters, numbers, symbols, Chinese)

This article mainly introduces the method of JS to verify the input input box (letters, numbers, symbols, Chinese). Has very good reference value. Let’s take a look with the editor below

Only English can be entered

Only English can be entered

Unable to paste, right-click will not pop up the paste menu

Only numbers can be entered:

Only numbers and decimal points can be entered :

Only numbers, decimal points, and underscores can be entered:

Only English and numbers can be entered:

Only Chinese characters can be input:

Input method input is prohibited:

Cannot switch input method

Only Chinese, English, numbers, @ symbols and . symbols can be entered:

Cannot be empty:

The above is the detailed content of Code example sharing for JS verification input box (letters, numbers, symbols, Chinese). For more information, please follow other related articles on the PHP Chinese website!