While HTML forms come with native validation features, developers often seek to provide custom error messages to improve the user experience, especially in multilingual contexts.
The Constraints API allows developers to override default HTML validation messages, giving them control over input elements and enabling them to set custom error messages as needed.
Using setCustomValidity() gives developers the ability to present specific error messages when input validation fails, enhancing clarity and user understanding in form submissions.
Customization of validation messages becomes especially important for supporting translated content across different browsers, allowing for consistency in user feedback regardless of language.
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