javascript - Why printing multiple times on calling a function - AngularJS -

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i calling function controller scope, in console values printed 3 times. why happening?

source

<!doctype html> <html ng-app="mymodule" > <head> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script> </head> <body ng-init="pricelist='promo03,promo04'"> <div ng-controller="pricingcontroller" >     {{splitarray()}} </div> <script> var mymodule = angular.module('mymodule',[]);  mymodule.controller('pricingcontroller',['$scope', function($scope){     $scope.pricestring = $scope.pricelist;     $scope.array = [];     $scope.splitarray= function(){         console.log($scope.pricestring);         $scope.array = $scope.pricestring.split(",");         console.log($scope.array[0]);         console.log($scope.array[1]);     }; }]); </script> </body> </html>

console output

promo03,promo04  promo03 promo04  promo03,promo04  promo03  promo04  promo03,promo04  promo03 promo04

expected output

promo03,promo04  promo03 promo04

this called every digest loop of angular. if keep program running, you'll have more logs.

to prevent it, call function controller, not binded value html.

for instance : 

$scope.splitarray= function(){         console.log($scope.pricestring);         $scope.array = $scope.pricestring.split(",");         console.log($scope.array[0]);         console.log($scope.array[1]);     }; $scope.splitarray();

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