How can I configure my own regular expressions for validation in the jqueryvalidation plugin?

Jqueryvalidation.org

I don't understand anything from the documentation. It seems that this possibility should logically be just in 

$('form').validation({
rule(

);
});
Author: Raz Galstyan, 2017-06-09
Source

3 answers

This plugin does not have a standard validation method that allows you to specify your own regular expressions, but you can add it yourself:

$.validator.addMethod('regexp', function(value, element, params) {
    var expression = new RegExp(params);
    return this.optional(element) || expression.test(value);
});

And use it like this:

$('form').validate({
    rules: {
        name: {
            regexp: /^[a-z]+$/
        }
    }
});
 2
Author: Maxim Zasorin, 2017-06-09 22:24:07

JQuery.validator.addMethod()

jQuery.validator.addMethod( name, method [, message ] )

Example: add a validation method that checks whether a string starts with a specific domain name.

jQuery.validator.addMethod("domain", function(value, element) {
  return this.optional(element) || /^http:\/\/mycorporatedomain.com/.test(value);
}, "Please specify the correct domain for your documents");

JQuery.validator.methods

Description: An object containing all the validation methods known to the validator. Can be used to override individual methods, keeping messages as default.

Example. Sets a custom template email address for the built-in email verification rule.

$.validator.methods.email = function( value, element ) {
  return this.optional( element ) || /[a-z]+@[a-z]+\.[a-z]+/.test( value );
}

$('form').validation({
    rules: {
        email: {
            required: true,
            email: true
        }
    }
});
 1
Author: Alex78191, 2017-06-09 22:30:49

Add it additional-methods.js or pattern.js and the jQuery Validation plugin will use the HTML5 attribute pattern.

<input type="text" name="somename" pattern="[A-Za-z0-9\w]{4,20}" />


$(document).ready(function() {

  $('#myform').validate({
    debug: true
  });
  
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.aspnetcdn.com/ajax/jquery.validate/1.13.0/jquery.validate.js"></script>
<script src="https://ajax.aspnetcdn.com/ajax/jquery.validate/1.13.0/additional-methods.js"></script>


<form id="myform">
  <input type="text" name="fullname" pattern="[A-Za-z0-9\w]{4,20}" required="required" />
  <input type="submit" />
</form>
 1
Author: Alex78191, 2017-06-09 22:43:35