Telephone Number validation in billing and shipping on frontend?

Question

I want the users to fill the Telephone field in a formatted way, for example, the format in my country is 03XX1234567. How can I set the field to only accept a number in this format else give an error?

Answer 1

Please check below for an example for custom validation (Accepting only numbers and minimum number count should equals or above 10)

Assign the below class to the telephone field "validate-phone"

Then add the below script in that page

Validation.add('validate-phone','Dashes or spaces are not accepted',function(the_field_value){
    if((the_field_value.length >= 10) && (!isNaN(the_field_value)))
    {
        return true;
    }
    return false;
});