jQuery - Cancel form submit (using “return false”?)?

Question

I\'m running into a bit of trouble while trying to cancel the submit of a form. I\'ve been following this tutorial (even though i\'m not making a login script), and it seems

Answer 1

I've run into similar issues. I solved them by removing the action and method of the form prior to validation and then adding them back in after validation. Here is the validator I wrote:

var Validator = function (formSelector) {
    this.formSelector = formSelector;
//  $(formSelector).submit(function() {return false;});
        this.Action = $(formSelector).attr("action");
        this.Method = $(formSelector).attr("method");
    $(formSelector).attr("action",function(){return ""}).attr("method",function(){return ""});  
        var donotsubmit = false;
        var notjustcheckbox = false;
        var checknotchecked = false;
    this.Required = new Array();
    this.Email = new Array();
    this.validate = function () {
        this.form = $(this.formSelector);
        var i = 0;
        for (i in this.Required){
            $(this.Required[i]).attr("value", function(index,attr){
                // Check on checkboxes...   
                if (this.getAttribute("type") == "checkbox"){
                    if (this.checked == false){ 
                        checknotchecked = true;
                        donotsubmit = true;
                    } else {
                    }       
                } else {    
                    if (attr == "" || attr == undefined){   
                        this.style.border = "1px solid red";
                        notjustcheckbox = true;
                        donotsubmit = true;     
                    } else {
                        this.style.border = "1px solid green";
                    }
                }
            });
        }
        i = 0;
        for (i in this.Email){
            $(this.Email[i]).attr("value", function(index,email){
                var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i ;
                if (filter.test(email) == true || filter.test(email) == "true") {
                    this.style.border = "1px solid green";
                } else if (filter.test(email) == false) {
                    donotsubmit = true;
                    notjustcheckbox = true;
                    this.style.border = "1px solid red";
                }
            });
        }
        if (donotsubmit == true){
            if (checknotchecked == true && notjustcheckbox == true){    
                alert("Please correct the fields in red and check the required checkboxes");
            } else if (checknotchecked == true && notjustcheckbox == false){
                alert("Please check the required checkboxes");
            } else {
                alert("Please correct the fields in red");
            }
            checknotchecked = false;
            notjustcheckbox = false;
            donotsubmit = false;
        } else {
            $(formSelector).attr({action : ''+this.Action+''});
            $(formSelector).attr({method : ''+this.Method+''});
            $(formSelector).submit();   
        }
        return true;
    };
};

You can implement it like this:

$(document).ready(function(){
    var myForm = new Validator("#formId");
        myForm.Required = new Array("input.lightborder");
                myForm.Email = new Array("#email");
                $("#form-submit-button-id").click(function(){
                    myForm.validate();
                });
});

You can add CSS Selectors for required fields. The one for Email must be unique.