refreshing iframe contents in AngularJS

问题:

I am writing an application which is part Anugular and part jQuery. I am separating them by loading the jQuery content in an iFrame.

Upon a certain event (say, upon a ng-click), I need to refresh the iFrame. My Controller contains the following code:

$scope.resfeshIframe = function() { //refresh the iFrame with id "anIframe" };

and the iFrame is:

<iframe id="anIframe" src="myUrl"></iframe>

Can someone help me with it. I can post more code if the required.

回答1:

As Paulo Scardine said, the right way to do it would be through a directive cause you shouldn't use controllers to manipulate DOM.

Something like this one could do :

.directive('refreshable', [function () {
    return {
        restrict: 'A',
        scope: {
            refresh: "=refreshable"
        },
        link: function (scope, element, attr) {
            var refreshMe = function () {
                element.attr('src', element.attr('src'));
            };

            scope.$watch('refresh', function (newVal, oldVal) {
                if (scope.refresh) {
                    scope.refresh = false;
                    refreshMe();
                }
            });
        }
    };
}])

Which could then be used like :

<iframe refreshable="tab.refresh"></iframe>

And :

$scope.refreshIframe = function(){
    $scope.tab.refresh = true;
}

回答2:

Another hack-ish solution: if you don't want to create a directive but want to stick to the good practices of not manipulating the DOM in controller. Keep the url in an array and use ng-repeat to render the iFrame: View:

<iframe ng-repeat="url in vm.url" ng-src="{{url}}" />

Controller:

vm.url = ['http://google.com'];

So, every time you set the value of the vm.url, angular will re-render the iFrame.

回答3:

Solved it by a hack suggested in Reload an iframe with jQuery

$scope.resfeshIframe = function() { 
    var iFrame = $document.find("anIframe");
    iFrame.attr("src",iFrame.attr("src"));
};

回答4:

If you want to refresh all iframes from your page :

    var refreshAllIframes = function(){
      var iFrames = $document.find('iframe');
      for(var i = 0; i < iFrames.length; i++){
        refreshFrame(i,iFrames);
      }
    }

    var refreshFrame = function(i,iFrames){
      iFrames[i].src = iFrames[i].src;
    }

回答5:

I did it in Angular 2 like that:

import { Component, ViewChild, ElementRef } from '@angular/core';
@Component({
    selector: 'myHTMLContainer',
    template: `<iframe #ifr ></iframe>`
    })

export class HTMLContainerComponent implements OnInit {
    @ViewChild('ifr') ifr: ElementRef;
    
    //call setURL function whenever you want to change the iframe's src
    setURL(url:string) {
        this.ifr.nativeElement["src"] = url;
    }