Angular js - Round off

Question

Sorry if already asked by someone . how do i round off a decimal number . does angular js hav built in functions for that purpose

 $scope.roundoff_call=function()
            {   
                $scope.Math = window.Math;
                 $scope.abc =$scope.Math.round(0.19,4)  
            }

it gives output as 0 and not 0.2 . Am new to angular js . Kindly Help Me

Why not simply round using plain old javascript? See: http://stackoverflow.com/questions/11832914/round-to-at-most-2-decimal-places-in-javascript — Adrian B., Aug 26 '15 at 10:33
angularjs didn't give the limit to put pure javascript in you're code. — mautrok, Aug 26 '15 at 10:33

score 3 · Answer 1 · answered Aug 26 '15 at 10:38

3

you can use angular existing filter

$filter('number')(number, 0)  in controller or service

or

<div>{{ val | number : 0}}</div>

answered Aug 26 '15 at 10:38

Murali K

393
5
13

2

filter does not change value . it only displays formatted number – Faiyaz Md Abdul Aug 26 '15 at 10:42
yes filter will return the value and it will reflect in the view. if want to change the model value then we need to assign the returned value to the model. – Murali K Aug 26 '15 at 10:55

Denish · Answer 2 · 2015-08-26T10:38:01.843

2

User html like

<span>{{val | number:0}}</span>

In app.js

<script>
  angular.module('numberFilterExample', [])
    .controller('ExampleController', ['$scope', function($scope) {
      $scope.val = 999.56789;
    }]);
</script>

Output

edited Aug 26 '15 at 10:38

answered Aug 26 '15 at 10:35

Denish

2,800
2
23
33

filter does not change value. it only displays formatted number – Faiyaz Md Abdul Aug 26 '15 at 10:43

score 0 · Answer 3 · answered Aug 26 '15 at 10:59

first, window.Math is not a angularjs function, is a javascript function. Math.round() rounds a number to the nearest integer not a nearest real.

you can use this function to obtains the result you want

function my_rounded_number(number , decimal_places){
    x = number * window.Math.pow(10 , decimal_places)
    x = window.Math.round(x)
    return  x * window.Math.pow(10 , -decimal_places)
}

$scope.roundoff_call=function()
        {   
            $scope.Math = my_rounded_number;
            console.log("0.19");
             $scope.abc =$scope.Math.round(0.19,1)
            console.log($scope.abc);

        }

the result: 0.2

Angular js - Round off

3 Answers3