Track Start and end web request at ionic framework

I am using ionic framework and Angular JS.

I am not sure where to start to track start of a web request.

For end request, I write a directive with onLoad tag.

here is the code

Directive.js

app.directive('iframeOnload', [function(){
    return {
        scope: {
            callBack: '&iframeOnload'
        },
        link: function(scope, element, attrs){
            element.on('load', function(){
                return scope.callBack({DOMelement: this});
            })
        }
    }}]);

At the HTML

<iframe id="webFrame" iframe-onload="iframeLoadedCallBack()" style="width:100%;height:650px;" ng-src='{{goToURL}}' ng-hide='hideIFrame'></iframe>

At the Controller The callback function is

    $scope.iframeLoadedCallBack = function() {
        console.log('iframeLoadedCallback');
        // finished web request callback do something here
    };

I guess there is something similar for start of the web request. And I need to track the send request URL.

I am an iOS developer, And actually I would like to do something similar to this protocol UIWebViewDelegate.

Thanks a lot