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up vote 1 down vote favorite

I have three buttons here wish to make $scope. -> q <- q as variable. How can I achieve that. This is just a test code my actual problem is based on making q as variable so please do not suggest any workaround

var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
    $scope.name = function(q){
    $scope.a = "John Doe "; // $scope.q how to make q varibale
    }
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">
Name: <button ng-click="name('a')" ng-model="name">this is a</button>
<button ng-click="name('b')" ng-model="name">this is b</button>
<button ng-click="name('c')" ng-model="name">this is c</button>
{{a}} via a<br>
{{b}} via b<br>
{{c}} via c<br>
</div>

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up vote 4 down vote accepted

Just add q as a key to scope because $scope in nature is an object

var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
    $scope.name = function(q){
    $scope[q] = "John Doe "; // $scope.q how to make q varibale
    }
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">
Name: <button ng-click="name('a')" ng-model="name">this is a</button>
<button ng-click="name('b')" ng-model="name">this is b</button>
<button ng-click="name('c')" ng-model="name">this is c</button>
{{a}} via a<br>
{{b}} via b<br>
{{c}} via c<br>
</div>

share|improve this answer
    
This is really helpful however there is this problem that after $scope.b is set why the value in $scope.a still exist ? how can i bypass that – sam Jan 31 at 9:24
    
Thats the nature of js variables value assigned retains it till memory – Vinod Louis Jan 31 at 9:27
    
is there no workaround for it not to happen? – sam Jan 31 at 9:33
    
The only way is to overwrite it – Vinod Louis Jan 31 at 9:36
    
$scope.name = function(q){ var ar = ["a","b","c"] for(var i=0;i<=ar.length;i++) { $scope[ar[i]]="" } $scope[q] = "John Doe "; } Is this the right way to do it? – sam 2 days ago
up vote 1 down vote 

var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
    $scope.name = function(q){
    $scope[q] = "John Doe "+ q; // $scope.q how to make q varibale
    }
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">
Name: <button ng-click="name('a')" ng-model="name">this is a</button>
<button ng-click="name('b')" ng-model="name">this is b</button>
<button ng-click="name('c')" ng-model="name">this is c</button>
{{a}} via a<br>
{{b}} via b<br>
{{c}} via c<br>
</div>

share|improve this answer
up vote 0 down vote

Just add q as a key to $scope Beause $scope is also an object. try this code:-

Controller

var app = angular.module('myApp', []);
app.controller('ctrl', function($scope) {
    $scope.name = function(q){
    $scope[q] = "Sam"; // now $scope.q will be a varriable
    }
});

in html:-

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js"></script>
<div ng-app="myApp" ng-controller="ctrl">
Name: <button ng-click="name('a')" ng-model="name">this is a</button>
<button ng-click="name('b')" ng-model="name">this is b</button>
<button ng-click="name('c')" ng-model="name">this is c</button>
{{a}} via a<br>
{{b}} via b<br>
{{c}} via c<br>
</div>
share|improve this answer

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