Restricting number to 2 decimal places in HTML file with AngularJS

问题

I have a HTML page that displays the information from an AngularJS controller. This is part of the code:

<td id="calories">{{ ctrl.caltotal }}</td>

My question is, what do I need to do so that this is displayed at a maximum of 2 decimal places? At the moment if I change the program it can give values like 23.00000004. Is this a change that should be made in the Angular Controller or in the HTMl view? Thanks.

回答1:

<td id="calories">{{ ctrl.caltotal | number:2}}</td>

That will restrict it to two decimal places.

回答2:

Consider the following code :

<html>
<head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.8/angular.min.js"></script> 
    <style>

    </style>
</head>
<body ng-app="myApp" ng-controller="myCtrl"> 
    <input type="number" ng-model="score" /> {{score | number:2}}
<script>
    //1 module declaration
    var app = angular.module('myApp', []);
    //2 controller declaration
    app.controller('myCtrl',function($scope){
        $scope.score = 50;
        //code here
    });
</script> 
</body> 
</html>

See here for further information: