How to check for alphanumeric characters

Question

I\'m writing a custom method for a jQuery plugin:

jQuery.validator.addMethod(\"alphanumeric\", function(value, element) {
        return this.optional(elemen         


        

Answer 1

// use below ... It is better parvez abobjects.com
jQuery.validator.addMethod("postalcode", function(postalcode, element) {
    if( this.optional(element) || /^[a-zA-Z\u00C0-\u00ff]+$/.test(postalcode)){ 
         return false;
    }else{ 
         return this.optional(element) || /^[a-zA-Z0-9]+/.test(postalcode); 
    } 

}, "
Invalid zip code");



rules:{
  ccZip:{          
           postalcode : true
       },
       phone:{required: true},

This will validate zip code having no letters but alphanumeric