Check which rule is not fullfiled in jQuery validate plugin

Written by  on October 25, 2011 

Recently, I have encountered a situation where I used jQuery validation plugin and needed to know which of validation rules are failing. After asking this question on http://stackoverflow.com/questions/7648727/jquery-validate-check-which-rule-is-not-fullfiled and receiving no answers for 15 days, I have spent some time to solve it by myself.

It turned out quite easy, after inspecting source code of plugin on https://github.com/jzaefferer/jquery-validation/blob/master/jquery.validate.js, I have found out that this can be done by adding my own function to it:

 

$.validator.prototype.ruleValidationStatus = function( element ) {
    element = $(element)[0];
    var rules = $(element).rules();
    var errors ={};
    for (var method in rules ) {
        var rule = { method: method, parameters: rules[method] };
        try {
            var result = $.validator.methods[method].call( this, element.value.replace(/\r/g, ""), element, rule.parameters );
 
            errors[rule.method] = result ;
 
        } catch(e) {
            console.log(e);
        }
    }
    return errors;
}

This function returns list of validation rules with their results, and usage is simple:

$("#myform").validate().ruleValidationStatus($("#myField"));

Category : jQueryProgramming

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