I have been trying to bind a value to the ng-src of an img HTML element to no avail.
HTML code:
<div ng-controller='footerCtrl'>
<a href="#"><img ng-src="{{avatar_url}}"/></a>
</div>
AngularJS code:
app.controller('footerCtrl',function($scope, userServices)
{
$scope.avatar_url='';
$scope.$on('updateAvatar', function()
{$scope.avatar_url = userServices.getAvatar_url();}
);
}
app.factory('userServices', function($rootScope){
var avatar_url='';
return{ setAvatar_url: function(newAvatar_url)
{ avatar_url = newAvatar_url; $rootScope.$broadcast('updateAvatar');}}
);
I would like to update the avatar_url variable in the ng-src every-time its respective variable(avatar_url) in the user Service is updated. The variable in the user Service is updated through a http.POST request to the server. I have checked that the response from the server does update the variable in the user Service which is then broadcast to the avatar_url variable in the footerCtrl.
However, the image element HTML does not reflect the changes at all. In fact, I have also tried to preset the avatar_url variable to a relative path to one of the pictures in my page, the image still shows nothing(the ng-src value is empty). T
This question is related to
angularjs
Changing the ng-src value is actually very simple. Like this:
<html ng-app>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.6/angular.min.js"></script>
</head>
<body>
<img ng-src="{{img_url}}">
<button ng-click="img_url = 'https://farm4.staticflickr.com/3261/2801924702_ffbdeda927_d.jpg'">Click</button>
</body>
</html>
Here is a jsFiddle of a working example: http://jsfiddle.net/Hx7B9/2/
We can use ng-src but when ng-src's value became null, '' or undefined, ng-src will not work.
So just use ng-if for this case:
http://jsfiddle.net/Hx7B9/299/
<div ng-app>
<div ng-controller="AppCtrl">
<a href='#'><img ng-src="{{link}}" ng-if="!!link"/></a>
<button ng-click="changeLink()">Change Image</button>
</div>
</div>
Source: Stackoverflow.com