AngularJS Trigger directive from controller call

Question

I want to trigger an AngularJS custom directive that contains jQuery instructions. How can it be done? I have read about emit function in the directive?

ideas?

Answer 1

You can use a service to communicate between the controller and the directive.

Service might look like this:

app.service("directiveService", function() {
    var listeners = [];
    return {
        subscribe: function(callback) {
            listeners.push(callback);
        },
        publish: function(msg) {
            angular.forEach(listeners, function(value, key) {
                value(msg);
            });
        }
    };
});

And the directive could respond to the service:

app.directive("jQueryDirective", function(directiveService) {
    directiveService.subscribe(function(msg) {
        // pretend this is jQuery 
        document.getElementById("example")
        .innerHTML = msg;
    });
    return {
        restrict: 'E'        
    };
});

Just substitute what I did for jQuery manipulation and you should have what you need.

Here's a working fiddle: http://jsfiddle.net/jeremylikness/wqXYx/