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Every example of "depends" I can find on the web uses the "required" rule. Clearly this is not sufficient. How do I use the "depends" clause with, for example, a "regex" rule?
I have two radio buttons, if one is selected, I regex-validate a textbox. If the other is selected, I don't care what is in the textbox.
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The jquery validate plugin requires a form element to function, so you should have your form fields (no matter how few) contained inside a form. You can tell the validation plugin not to operate on form submission, then manually validate the form when the correct submit button is clicked.
fn , so simply check whether it exists or not; if (typeof jQuery. fn. validationPlugin === "function") { // It's loaded } else { // It's not. }
Unobtrusive Validation means without writing a lot of validation code, you can perform simple client-side validation by adding the suitable attributes and including the suitable script files. These unobtrusive validation libraries need to be added: jquery.validate.min.js.
The 2nd example in the documentation uses email:
$(".selector").validate({
rules: {
contact: {
required: true,
email: {
depends: function(element) {
return $("#contactform_email:checked")
}
}
}
}
});
In summary, that rule is saying "contact is required and it must be an email address if #contactform_email checkbox is checked".
So if you wanted to do that with a regex (or any parameter-requiring rule method), it looks like this:
minlength: {
param:6,
depends: function (element) {
return $('#len').is(':checked');
}
}
Which says "The min length is 6 but only when the #len checkbox is checked".
See it in action here: http://jsfiddle.net/ryleyb/8Nsm3/
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