1 files changed, 3 insertions, 0 deletions
diff --git a/js/util.js b/js/util.js
index dcc978f..dde3427 100644
--- a/js/util.js
+++ b/js/util.js
@@ -1,10 +1,13 @@
 if (window.$) {
   $.fn.int = function(){ return parseInt($(this).val(),10) }
   $.fn.float = function(){ return parseFloat($(this).val()) }
+  $.fn.string = function(){ return trim($(this).val()) }
   $.fn.enable = function() { return $(this).attr("disabled",null) }
   $.fn.disable = function() { return $(this).attr("disabled","disabled") }
 }
 
+function trim(s){ return s.replace(/^\s+/,"").replace(/\s+$/,"") }
+
 var E = Math.E
 var PI = Math.PI
 function clamp(n,a,b){ return n<a?a:n<b?n:b }