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

This document describes how to verify the input box (letters, numbers, symbols, and Chinese characters) in JavaScript. It has good reference value. Next let's take a look at it. This article mainly introduces the JS verification input box (letters, numbers, symbols, Chinese. It has good reference value. Let's take a look at it with the small Editor.

Only English can be entered

Only English can be entered

The menu cannot be pasted. The right-click menu will not pop up.

Only numbers can be entered:

Only numbers can be entered, decimal point:

You can only enter numbers, decimal points, and underscores:

Only English letters and numbers can be entered:

Only Chinese characters can be entered:

Forbidden input:

Unable to Switch Input Method

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

Cannot be blank:

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