jquery to validate phone number

/\(?([0-9]{3})\)?([ .-]?)([0-9]{3})\2([0-9]{4})/

Supports :

• (123) 456 7899
• (123).456.7899
• (123)-456-7899
• 123-456-7899
• 123 456 7899
• 1234567899

function validatePhone(txtPhone) {
    var a = document.getElementById(txtPhone).value;
    var filter = /^((\+[1-9]{1,4}[ \-]*)|(\([0-9]{2,3}\)[ \-]*)|([0-9]{2,4})[ \-]*)*?[0-9]{3,4}?[ \-]*[0-9]{3,4}?$/;
    if (filter.test(a)) {
        return true;
    }
    else {
        return false;
    }
}

Demo http://jsfiddle.net/dishantd/JLJMW/496/

Your regex should be something like

[0-9\-\(\)\s]+.

It matches numbers, dashes, parentheses and space.

If you need something more strict, matching just your example, try this:

([0-9]{10})|(\([0-9]{3}\)\s+[0-9]{3}\-[0-9]{4})

Your code:

rules: {
    phoneNumber: {
        matches: "[0-9]+",  // <-- no such method called "matches"!
        minlength:10,
        maxlength:10
    }
}

There is no such callback function, option, method, or rule called matches anywhere within the jQuery Validate plugin. (EDIT: OP failed to mention that matches is his custom method.)

However, within the additional-methods.js file, there are several phone number validation methods you can use. The one called phoneUS should satisfy your pattern. Since the rule already validates the length, minlength and maxlength are redundantly unnecessary. It's also much more comprehensive in that area codes and prefixes can not start with a 1.

rules: {
    phoneNumber: {
        phoneUS: true
    }
}

DEMO: http://jsfiddle.net/eWhkv/

---

If, for whatever reason, you just need the regex for use in another method, you can take it from here...

jQuery.validator.addMethod("phoneUS", function(phone_number, element) {
    phone_number = phone_number.replace(/\s+/g, "");
    return this.optional(element) || phone_number.length > 9 && 
    phone_number.match(/^(\+?1-?)?(\([2-9]\d{2}\)|[2-9]\d{2})-?[2-9]\d{2}-?\d{4}$/);
}, "Please specify a valid phone number");