1 Comment

1. Unknown Said,

   i made some modification to let it accept "," and change it to "."
   your code accept value - or -. so i made a controle to fix this, the result is :
   
   
   // price text-box allow numeric and allow 2 decimal points only
   function extractNumber(obj, decimalPlaces, allowNegative)
   {
   var temp = obj.value;
   
   // avoid changing things if already formatted correctly
   var reg0Str = '[0-9]*';
   if (decimalPlaces > 0) {
   reg0Str += '\[\,\.]?[0-9]{0,' + decimalPlaces + '}';
   } else if (decimalPlaces < 0) {
   reg0Str += '\[\,\.]?[0-9]*';
   }
   reg0Str = allowNegative ? '^-?' + reg0Str : '^' + reg0Str;
   reg0Str = reg0Str + '$';
   var reg0 = new RegExp(reg0Str);
   if (reg0.test(temp)) return true;
   
   // first replace all non numbers
   var reg1Str = '[^0-9' + (decimalPlaces != 0 ? '.' : '') + (decimalPlaces != 0 ? ',' : '') + (allowNegative ? '-' : '') + ']';
   var reg1 = new RegExp(reg1Str, 'g');
   temp = temp.replace(reg1, '');
   
   if (allowNegative) {
   // replace extra negative
   var hasNegative = temp.length > 0 && temp.charAt(0) == '-';
   var reg2 = /-/g;
   temp = temp.replace(reg2, '');
   if (hasNegative) temp = '-' + temp;
   }
   
   if (decimalPlaces != 0) {
   var reg3 = /[\,\.]/g;
   var reg3Array = reg3.exec(temp);
   if (reg3Array != null) {
   // keep only first occurrence of .
   // and the number of places specified by decimalPlaces or the entire string if decimalPlaces < 0
   var reg3Right = temp.substring(reg3Array.index + reg3Array[0].length);
   reg3Right = reg3Right.replace(reg3, '');
   reg3Right = decimalPlaces > 0 ? reg3Right.substring(0, decimalPlaces) : reg3Right;
   temp = temp.substring(0,reg3Array.index) + '.' + reg3Right;
   }
   }
   
   obj.value = temp;
   }
   function blockNonNumbers(obj, e, allowDecimal, allowNegative)
   {
   var key;
   var isCtrl = false;
   var keychar;
   var reg;
   if(window.event) {
   key = e.keyCode;
   isCtrl = window.event.ctrlKey
   }
   else if(e.which) {
   key = e.which;
   isCtrl = e.ctrlKey;
   }
   
   if (isNaN(key)) return true;
   
   keychar = String.fromCharCode(key);
   
   // check for backspace or delete, or if Ctrl was pressed
   if (key == 8 || isCtrl)
   {
   return true;
   }
   
   reg = /\d/;
   var isFirstN = allowNegative ? keychar == '-' && obj.value.indexOf('-') == -1 : false;
   var isFirstD = allowDecimal ? keychar == '.' && obj.value.indexOf('.') == -1 : false;
   var isFirstC = allowDecimal ? keychar == ',' && obj.value.indexOf(',') == -1 : false;
   return isFirstN || isFirstD || isFirstC || reg.test(keychar);
   }
   function blockInvalid(obj)
   {
   var temp=obj.value;
   if(temp=="-")
   {
   temp="";
   }
   
   if (temp.indexOf(".")==temp.length-1 && temp.indexOf(".")!=-1)
   {
   temp=temp+"00";
   }
   if (temp.indexOf(".")==0)
   {
   temp="0"+temp;
   }
   if (temp.indexOf(".")==1 && temp.indexOf("-")==0)
   {
   temp=temp.replace("-","-0") ;
   }
   if (temp.indexOf(",")==temp.length-1 && temp.indexOf(",")!=-1)
   {
   temp=temp+"00";
   }
   if (temp.indexOf(",")==0)
   {
   temp="0"+temp;
   }
   if (temp.indexOf(",")==1 && temp.indexOf("-")==0)
   {
   temp=temp.replace("-","-0") ;
   }
   temp=temp.replace(",",".") ;
   obj.value=temp;
   }
   // end of price text-box allow numeric and allow 2 decimal points only
   
   
   in the input
   onblur="extractNumber(this,2,true);blockInvalid(this);" onkeyup="extractNumber(this,2,true);" onkeypress="return blockNonNumbers(this, event, true, true);"

   Posted on 7:50 PM, February 04, 2013