Probably, it is the simplest thing but I couldn't parse a string to Int in angular..
What I am trying to do:
<input type="text" ng-model="num1">
<input type="text" ng-model="num2">
Total: {{num1 + num2}}
How can I sum these num1 and num2 values?
Thnx!
You cannot (at least at the moment) use parseInt inside angular expressions, as they're not evaluated directly. Quoting the doc:
Angular does not use JavaScript's
eval()to evaluate expressions. Instead Angular's$parseservice processes these expressions.Angular expressions do not have access to global variables like
window,documentorlocation. This restriction is intentional. It prevents accidental access to the global state – a common source of subtle bugs.
So you can define a total() method in your controller, then use it in the expression:
// ... somewhere in controller
$scope.total = function() {
return parseInt($scope.num1) + parseInt($scope.num2)
}
// ... in HTML
Total: {{ total() }}
Still, that seems to be rather bulky for a such a simple operation as adding the numbers. The alternative is converting the results with -0 op:
Total: {{num1-0 + (num2-0)|number}}
... but that'll obviously won't parseInt values, only cast them to Numbers (|number filter prevents showing null if this cast results in NaN). So choose the approach that suits your particular case.
Option 1 (via controller):
angular.controller('numCtrl', function($scope, $window) {
$scope.num = parseInt(num , 10);
}
Option 2 (via custom filter):
app.filter('num', function() {
return function(input) {
return parseInt(input, 10);
}
});
{{(num1 | num) + (num2 | num)}}
Option 3 (via expression):
Declare this first in your controller:
$scope.parseInt = parseInt;
Then:
{{parseInt(num1)+parseInt(num2)}}
Option 4 (from raina77ow)
{{(num1-0) + (num2-0)}}
<input type="number" string-to-number ng-model="num1">
<input type="number" string-to-number ng-model="num2">
Total: {{num1 + num2}}
and in js :
parseInt($scope.num1) + parseInt($scope.num2)
Perform the operation inside the scope itself.
<script>
angular.controller('MyCtrl', function($scope, $window) {
$scope.num1= 0;
$scope.num2= 1;
$scope.total = $scope.num1 + $scope.num2;
});
</script>
<input type="text" ng-model="num1">
<input type="text" ng-model="num2">
Total: {{total}}
var app = angular.module('myApp', [])
app.controller('MainCtrl', ['$scope', function($scope){
$scope.num1 = 1;
$scope.num2 = 1;
$scope.total = parseInt($scope.num1 + $scope.num2);
}]);
Demo: parseInt with AngularJS
This are to way to bind add too numbers
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<script>
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.total = function() {
return parseInt($scope.num1) + parseInt($scope.num2)
}
})
</script>
<body ng-app='myApp' ng-controller='myCtrl'>
<input type="number" ng-model="num1">
<input type="number" ng-model="num2">
Total:{{num1+num2}}
Total: {{total() }}
</body>
</html>Inside template this working finely.
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="">
<input ng-model="name" value="0">
<p>My first expression: {{ (name-0) + 5 }}</p>
</div>
</body>
</html>
{{(num1-0) + (num2-0)}}, no? But I'd rather use a helper function here.