AngularJS - Trigger when radio button is selected
AngularjsAngularjs Problem Overview
I searched and tried many ng-xxxx kind of options but couldn't find the one.. I just want to call some function in the controller when radio button is selected.
So it might be similar to following..(Of course, below code is not working)
<input type="radio" ng-model="value" value="one" ng-click="checkStuff()"/>
Is there any way to achieve what I want?
Angularjs Solutions
Solution 1 - Angularjs
There are at least 2 different methods of invoking functions on radio button selection:
-
Using
ng-changedirective:
and then, in a controller:
$scope.newValue = function(value) {
console.log(value);
}
Here is the jsFiddle: http://jsfiddle.net/ZPcSe/5/
-
Watching the model for changes. This doesn't require anything special on the input level:
but in a controller one would have:
$scope.$watch('value', function(value) {
console.log(value);
});
And the jsFiddle: http://jsfiddle.net/vDTRp/2/
Knowing more about your the use case would help to propose an adequate solution.
Solution 2 - Angularjs
Should use ngChange instead of ngClick if trigger source is not from click.
Is the below what you want ? what exactly doesn't work in your case ?
var myApp = angular.module('myApp', []);
function MyCtrl($scope) {
$scope.value = "none" ;
$scope.isChecked = false;
$scope.checkStuff = function () {
$scope.isChecked = !$scope.isChecked;
}
}
<div ng-controller="MyCtrl">
<input type="radio" ng-model="value" value="one" ng-change="checkStuff()" />
<span> {{value}} isCheck:{{isChecked}} </span>
</div>
Solution 3 - Angularjs
In newer versions of angular (I'm using 1.3) you can basically set the model and the value and the double binding do all the work this example works like a charm:
angular.module('radioExample', []).controller('ExampleController', ['$scope', function($scope) {
$scope.color = {
name: 'blue'
};
}]);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
<html>
<body ng-app="radioExample">
<form name="myForm" ng-controller="ExampleController">
<input type="radio" ng-model="color.name" value="red"> Red <br/>
<input type="radio" ng-model="color.name" value="green"> Green <br/>
<input type="radio" ng-model="color.name" value="blue"> Blue <br/>
<tt>color = {{color.name}}</tt><br/>
</form>
</body>
</html>
Solution 4 - Angularjs
For dynamic values!
<div class="col-md-4" ng-repeat="(k, v) in tiposAcesso">
<label class="control-label">
<input type="radio" name="tipoAcesso" ng-model="userLogin.tipoAcesso" value="{{k}}" ng-change="changeTipoAcesso(k)" />
<span ng-bind="v"></span>
</label>
</div>
in controller
$scope.changeTipoAcesso = function(value) {
console.log(value);
};
Solution 5 - Angularjs
Another approach is using Object.defineProperty to set valueas a getter setter property in the controller scope, then each change on the value property will trigger a function specified in the setter:
The HTML file:
<input type="radio" ng-model="value" value="one"/>
<input type="radio" ng-model="value" value="two"/>
<input type="radio" ng-model="value" value="three"/>
The javascript file:
var _value = null;
Object.defineProperty($scope, 'value', {
get: function () {
return _value;
},
set: function (value) {
_value = value;
someFunction();
}
});
see this plunker for the implementation
Solution 6 - Angularjs
i prefer to use ng-value with ng-if, [ng-value] will handle trigger changes
<input type="radio" name="isStudent" ng-model="isStudent" ng-value="true" />
//to show and hide input by removing it from the DOM, that's make me secure from malicious data
<input type="text" ng-if="isStudent" name="textForStudent" ng-model="job">
Solution 7 - Angularjs
<form name="myForm" ng-submit="submitForm()">
<label data-ng-repeat="i in [1,2,3]"><input type="radio" name="test" ng-model="$parent.radioValue" value="{{i}}"/>{{i}}</label>
<div>currently selected: {{radioValue}}</div>
<button type="submit">Submit</button>
</form>