Uppercase word in Javascript

ucword.js

//
// because I like to Captilize Id's
// <span='Name'><label><input name='name'/></label></span
//
    var TSD = {};// my object 

    TSD.ucword = function(string) {
        return string.charAt(0).toUpperCase() + string.slice(1);
    }

// usage
   fieldId = TSD.ucword(field + workorder);
   if($(fieldId)) {
        $(fieldId).set('html',field_value);
   } else {
        (function(){ window.location.href = '/view/' + workorder }).delay(500);
   }