crm.fsf.org/20131203/files/sites/all/modules-new/civicrm/bower_components/jquery-validation/src/additional/extension.js

   1 // Older "accept" file extension method. Old docs: http://docs.jquery.com/Plugins/Validation/Methods/accept
   2 $.validator.addMethod("extension", function(value, element, param) {
   3         param = typeof param === "string" ? param.replace(/,/g, "|") : "png|jpe?g|gif";
   4         return this.optional(element) || value.match(new RegExp(".(" + param + ")$", "i"));
   5 }, $.validator.format("Please enter a value with a valid extension."));