Question

I want to create a jQuery validation method to validate according to the following rules:

1. English letters . A-Z , a-z .
2. Non English letters \u0080-\u024F .
3. and for these characters – / ) ( ` . ” ‘
4. and space character

Currently I am using:

jQuery.validator.addMethod("custommethod", function(value, element) {
      return this.optional(element) || /^[a-zA-Z\u0080-\u024F ]+$/i.test(jQuery.trim(value));
    }, "You Have Typed Invalid Characters"); 

Currently I have done the validation for step 1,2,4. But when I try to add step 3 it fails.

How do I add step 3 to the validation?

Answer 1

Just add characters that may be part of a RegExp in escaped form:

/^[a-zA-Z\u0080-\u024F\s\/\-\)\(\."`']+$/i
   .test('.ab-"..c ëd ç -(// \')'); //=>true

See also, especially Table 4.1 Special characters in regular expressions.