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This article mainly introduces the relevant knowledge of how to use checkValidity in JavaScript, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this article on how to use checkValidity in JavaScript. Let's take a look at it.

Attribute description

CheckValidity () returns true if the input element contains valid data.

SetCustomValidity () sets the validationMessage attribute of the input element.

If the input field contains invalid data, a message is displayed:

CheckValidity () method

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