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bootstrap-validator is a simple and practical Bootstrap3 form validation jQuery plugin. The form verification plug-in uses the HTML5 data attribute to set the verification attributes, which can complete all common form verification functions. The main features can be configured through data-api and standard HTML5 attributes. You can promptly notify users of form input errors. The submit button is only available after all the form validations have passed. Can customize the error message. Customizable verification function. A form field can be validated through Ajax.