Validating Canadian Postal Codes with the JQuery Validation Plugin

If you’re using the JQuery Validation Plugin, you can use the following code snippet to validate a Canadian postal code:

jQuery.validator.addMethod("cdnPostal", function(postal, element) {
    return this.optional(element) || 
    postal.match(/[a-zA-Z][0-9][a-zA-Z](-| |)[0-9][a-zA-Z][0-9]/);
}, "Please specify a valid postal code.");

Then use the following rule:

    rules: {
        postal_code: {
            required: true,
            cdnPostal: true