AngularJS number input formatted view

Question

I want to use a formatted number input to show thousand seperator dots to user when he types big numbers. Here is the directive code that I used: http://jsfiddle.net/LCZfd/3

Answer 1

you can try this, I modified the directive I saw here... How do I restrict an input to only accept numbers? ...

here's the modified directive I made... This directive uses the keyup event to modify the input on the fly...

.directive('numericOnly', function($filter) {
 return {
  require: 'ngModel',
  link: function(scope, element, attrs, modelCtrl) {

       element.bind('keyup', function (inputValue, e) {
         var strinput = modelCtrl.$$rawModelValue;
         //filter user input
         var transformedInput = strinput ? strinput.replace(/[^,\d.-]/g,'') : null;
         //remove trailing 0
         if(transformedInput.charAt(0) <= '0'){
           transformedInput = null;
           modelCtrl.$setViewValue(transformedInput);
           modelCtrl.$render();
         }else{
           var decimalSplit = transformedInput.split(".")
           var intPart = decimalSplit[0];
           var decPart = decimalSplit[1];
           //remove previously formated number
           intPart = intPart.replace(/,/g, "");
           //split whole number into array of 3 digits
           if(intPart.length > 3){
             var intDiv = Math.floor(intPart.length / 3);
             var strfraction = [];
             var i = intDiv,
                 j = 3;

             while(intDiv > 0){
               strfraction[intDiv] = intPart.slice(intPart.length-j,intPart.length - (j - 3));
               j=j+3;
               intDiv--;
             }
             var k = j-3;
             if((intPart.length-k) > 0){
               strfraction[0] = intPart.slice(0,intPart.length-k);
             }
           }
           //join arrays
           if(strfraction == undefined){ return;}
             var currencyformat = strfraction.join(',');
             //check for leading comma
             if(currencyformat.charAt(0)==','){
               currencyformat = currencyformat.slice(1);
             }

             if(decPart ==  undefined){
               modelCtrl.$setViewValue(currencyformat);
               modelCtrl.$render();
               return;
             }else{
               currencyformat = currencyformat + "." + decPart.slice(0,2);
               modelCtrl.$setViewValue(currencyformat);
               modelCtrl.$render();
             }
         }
        });
  }

};

you use it like this ...