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How to detect all imges loading finished in AngularJS

I want to use ng-repeatmore than 100 images per page to display. These images take a considerable amount of time to load, and I do not want to show that they are downloaded by users. Therefore, I want to show them only after they are loaded in the browser.

Is there any way to detect if all images are uploaded?

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2 answers

you can use an event loadlike this.

image.addEventListener('load', function() {
       /* do stuff */ 
});

Angular Directives

Single Image Solution

HTML

<div ng-app="myapp">
    <div ng-controller="MyCtrl1">
        <loaded-img src="src"></loaded-img>
        <img ng-src="{{src2}}" />'
    </div>
</div>

Js

var myApp = angular.module('myapp',[]);
myApp
    .controller('MyCtrl1', function ($scope) {
            $scope.src = "http://lorempixel.com/800/200/sports/1/";
            $scope.src2 = "http://lorempixel.com/800/200/sports/2/";
    })
    .directive('loadedImg', function(){
        return {
            restrict: 'E',
            scope: {
                src: '='
            },
            replace: true,
            template: '<img ng-src="{{src}}" class="none"/>',
            link: function(scope, ele, attr){
                ele.on('load', function(){
                    ele.removeClass('none');
                });           
            }
        };
    });

CSS

.none{
    display: none;
}

http://jsfiddle.net/jigardafda/rqkor67a/4/

jsfiddle, , src , src2 ( , )

HTML

<div ng-app="myapp">
    <div ng-controller="MyCtrl1">
        <div ng-repeat="imgx in imgpaths" ng-hide="hideall">
            <loaded-img isrc="imgx.path" onloadimg="imgx.callback(imgx)"></loaded-img>
        </div>
    </div>
 </div>

JS

var myApp = angular.module('myapp',[]);
myApp
    .controller('MyCtrl1', function ($scope, $q) {

        var imp = 'http://lorempixel.com/800/300/sports/';

        var deferred;
        var dArr = [];
        var imgpaths = [];

        for(var i = 0; i < 10; i++){
            deferred = $q.defer();
            imgpaths.push({
                path: imp + i,
                callback: deferred.resolve
            });
            dArr.push(deferred.promise);
        }

        $scope.imgpaths = imgpaths;

        $scope.hideall = true;

        $q.all(dArr).then(function(){
            $scope.hideall = false;
            console.log('all loaded')
        });
    })
    .directive('loadedImg', function(){
        return {
            restrict: 'E',
            scope: {
                isrc: '=',
                onloadimg: '&'
            },
            replace: true,
            template: '<img ng-src="{{isrc}}" class="none"/>',
            link: function(scope, ele, attr){
                ele.on('load', function(){
                    console.log(scope.isrc, 'loaded');
                    ele.removeClass('none');
                    scope.onloadimg();
                });           
            }
        };
    });

, ,

deferred deferred.resolve , deferred objects promise . $q.all, , .

http://jsfiddle.net/jigardafda/rqkor67a/5/

UPDATE: angular.

UPDATE: .

+11

,

jQuery.fn.extend({
  imagesLoaded: function( callback ) {
    var i, c = true, t = this, l = t.length;
    for ( i = 0; i < l; i++ ) {
      if (this[i].tagName === "IMG") {
        c = (c && this[i].complete && this[i].height !== 0);
      }
    }
    if (c) {
      if (typeof callback === "function") { callback(); }
    } else {
      setTimeout(function(){
        jQuery(t).imagesLoaded( callback );
      }, 200);
    }
  }
});
  • ,
  • ( )
  • : $('.wrap img').imagesLoaded(function(){ alert('all images loaded'); });

: , Source:

http://wowmotty.blogspot.in/2011/12/all-images-loaded-imagesloaded.html

-1

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