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I have something like this:
<form> <input name='roles' type='checkbox' value='1' /> <input name='roles' type='checkbox' value='2' /> <input name='roles' type='checkbox' value='3' /> <input name='roles' type='checkbox' value='4' /> <input name='roles' type='checkbox' value='5' /> <input type='submit' value='submit' /> <form> I would like to validate that at least one checkbox (roles) should be checked, is it possible with jquery.validate ?
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$('#frmTest input[type="checkbox"]').is(':checked')){ alert("Please check at least one."); return false; } }); is(':checked') will return true if at least one or more of the checkboxes are checked. Is it possible for this to check on live checkbox clicks? Yes, but you would use a different event handler.
This way, when saving to db, the value will always be there, 0 or 1. $rules = [ 'checkbox1' => 'required_without_all:checkbox2,checkbox3', 'checkbox2' => 'required_without_all:checkbox1,checkbox3', 'checkbox3' => 'required_without_all:checkbox1,checkbox2', ];
Checking if a checkbox is checked First, select the checkbox using a DOM method such as getElementById() or querySelector() . Then, access the checked property of the checkbox element. If its checked property is true , then the checkbox is checked; otherwise, it is not.
$('#form1'). submit(function() { if ($('input:checkbox', this).is(':checked') && $('input:radio', this).is(':checked')) { // everything's fine... } else { alert('Please select something! '); return false; } });
Example from https://github.com/ffmike/jquery-validate
<label for="spam_email"> <input type="checkbox" class="checkbox" id="spam_email" value="email" name="spam[]" validate="required:true, minlength:2" /> Spam via E-Mail </label> <label for="spam_phone"> <input type="checkbox" class="checkbox" id="spam_phone" value="phone" name="spam[]" /> Spam via Phone </label> <label for="spam_mail"> <input type="checkbox" class="checkbox" id="spam_mail" value="mail" name="spam[]" /> Spam via Mail </label> <label for="spam[]" class="error">Please select at least two types of spam.</label> The same without field "validate" in tags only using javascript:
$("#testform").validate({ rules: { "spam[]": { required: true, minlength: 1 } }, messages: { "spam[]": "Please select at least two types of spam." } }); And if you need different names for inputs, you can use somethig like this:
<input type="hidden" name="spam" id="spam"/> <label for="spam_phone"> <input type="checkbox" class="checkbox" id="spam_phone" value="phone" name="spam_phone" /> Spam via Phone</label> <label for="spam_mail"> <input type="checkbox" class="checkbox" id="spam_mail" value="mail" name="spam_mail" /> Spam via Mail </label> Javascript:
$("#testform").validate({ rules: { spam: { required: function (element) { var boxes = $('.checkbox'); if (boxes.filter(':checked').length == 0) { return true; } return false; }, minlength: 1 } }, messages: { spam: "Please select at least two types of spam." } }); I have added hidden input before inputs and setting it to "required" if there is no selected checkboxes
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