在Angular中重新加载图像 [英] Reload image in Angular

问题描述

我正在尝试每隔n秒从我的网络服务器重新加载一张图片。下面的代码拖拽新图片，但它不会取代客户端中的旧图片。我的错误在哪里？

I'm trying to reload an image from my webserver every n seconds. The code below drags the new picture, but it doesn't replace the old one in the client. Where is my mistake?

<div ng-app="refresh-div" ng-controller="refresh_control">
    <img ng-src="{{imageUrl}}" />
</div>

<script>
    var app = angular.module('refresh-div', [])
        .controller('refresh_control', function ($scope, $http, $timeout) {
            $scope.imageURL = 'assets/now.png?_ts=' + new Date().getTime();

            $scope.getData = function () {
                $http.get($scope.imageURL, {
                    cache: false
                }).success(function (data, status, headers, config) {
                    $scope.image = data;
                    $scope.imageUrl = "http://mywebsite/assets/now.png";
                });
            };

            $scope.intervalFunction = function () {
                $timeout(function () {
                    $scope.getData();
                    $scope.intervalFunction();
                }, 1500)
            };

            $scope.intervalFunction();
        });
</script>

推荐答案

修复了问题，问题是$ scope。 imageURL =' http：//mywebsite/assets/now.png？_ts = '+ new 。日期（）的getTime（）;成功函数中缺少。基本上，我需要更新图像的URL。我不确定它是否是最好的解决方案，但它符合我的要求。

Fixed the problem, the issue was that $scope.imageURL = 'http://mywebsite/assets/now.png?_ts=' + new Date().getTime(); was missing from the success function. Basically, I needed to updated the url of the image. I'm not sure if it is the best solution, but it is working for my requirements.

<div ng-app="refresh-div" ng-controller="refresh_control">
    <img ng-src="{{imageURL}}" />
</div>

<script>
    var app = angular.module('refresh-div', [])
        .controller('refresh_control', function ($scope, $http, $timeout) {
            $scope.imageURL = 'http://mywebsite/assets/now.png?_ts=' + new Date().getTime(); 

            $scope.getImage = function () {
                $http.get($scope.imageURL, {
                    cache: false
                }).success(function (data, status, headers, config) {
                    $scope.imageURL = 'http://mywebsite/assets/now.png?_ts=' + new Date().getTime();
                });
            };

            $scope.intervalFunction = function () {
                $timeout(function () {
                    $scope.getImage();
                    $scope.intervalFunction();
                }, 1500)
            };

            $scope.intervalFunction();
        });
</script>

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