I'm using jQuery's Validation plugin to validate a form, which is going well. I know there are built-in methods to check for an email address, URL, etc. However, now I want to check for a specific regex (^[a-zA-Z\ ]+$ in this case, but I'm looking for a general answer).
How can I let the plugin check for a regular expression?
Going by the documentation you've linked to, you'd want to use addMethod.
Presumably (I've not used this plugin) with something like:
$.validator.addMethod("myMethod", function(text) {
var regex = /^[a-zA-Z\ ]+$/;
return regex.test(text);
}, "Custom error message");
You could go one step further by making your own regex method:
$.validator.addMethod("regex", function(text, pattern) {
return pattern.test(text);
}, "Pattern does not match.");
You need to do something like this:
$.validator.addMethod(
"regex",
function(value, element, regexp) {
var re = new RegExp(regexp);
return this.optional(element) || re.test(value);
},
"Please check your input."
);
now all you need to do to validate against any regex is this:
$("#Textbox").rules("add", { regex: "^[a-zA-Z'.\\s]{1,40}$" })
I had this sample with me so thought of just pasting it. you are defining a method that checks again your regex pattern and in the below code you apply the rule for particular control(s). change the validation condition and regex pattern with your requirements.
