Javascript form validator
We present you a very simple solution for validating HTML forms. If you do not want to pull a MB of JS dependencies, like, «jQuery» just for the sake of checking the correctness of the entered user data, then our solution will suit you.
How to use
- Include script on your page
- Apply «[data-rule]» attribute for each form element that you want to check, or the attribute value, specify the name of one or more rules
- You need to create an instance of Validator and pass it two parameters (Form handle and Callback function)
<!-- Your form --> <form name="form" id="my-form"> <!-- Required field email --> <input type="text" name="email" data-rule="required|email"/> <input type="submit" value="Submit"/> </form> <!-- Append the validator JS script --> <script type="text/javascript" src="js-form-validator.js"></script> <script> // Init validator with standart settings new Validator(document.querySelector('#my-form'), function (err, res) { return res; }); </script>What else
- Rules customization
- Errors messages customization
- Automatic update when changing the form
- Api