创建使用Angularjs一个指令一个ajax加载微调 [英] Creating an ajax loading spinner using a directive in Angularjs

问题描述

我试图创建一个简单的加载器。下面是我迄今所做的。可能有人请看看，让我知道我要去哪里错了吗？

I'm trying to create a simple loader. Below is what I have done so far. Could someone please take a look and let me know where I'm going wrong?

它出现在CSS样式装载没有被添加样式2 。我的DOM只是表明：

It appears the CSS styles loading style-2 are not being added. my DOM just shows:

<span class=""></span>

我的指令：

angular.module('loaderModule', [
    'restangular',
])

.controller('appLoaderController', ['$scope', function ($scope) {
    $scope.$on('LOAD', function () {
        $scope.loading = "loading style-2"
    });
    $scope.$on('UNLOAD', function () {
        $scope.loading = ""
    });
}])

.directive('spinLoader', function() {
    return {
        restrict: 'E',
        transclude: true,
        template: '<span class="{{ loading }}"></span><div ng-transclude ></div>'
    };
});

HTML 的

HTML:

<spin-loader>
    <div ui-view></div>
</spin-loader>

我然后只调用使用它： $ $范围内发出（'LOAD'）

推荐答案

我会利用纳克级在你的指令是这样的：

I would make use of ng-class in your directive like this:

    app.directive('spinLoader', function() {
        return {
            restrict: 'E',
            transclude: true,
            template: '<div ng-class="{loading: isLoading, style2: isLoading}" ng-transclude></div>'
        };
    });

在您的控制器，可以再设置 $ scope.isLoading 是真还是假。

In your controller you can then set $scope.isLoading to be true or false.

app.controller('Ctrl', function ($scope) {

        var dummyLoadingVariable = false;

        $scope.$on('LOAD', function () {
            $scope.isLoading = true;
        });
        $scope.$on('UNLOAD', function () {
            $scope.isLoading = false;
        });

        $scope.toggleLoading = function(){
            dummyLoadingVariable = !dummyLoadingVariable;

            if(dummyLoadingVariable){
                $scope.$emit('LOAD');
            } else {
                $scope.$emit('UNLOAD')
            }
        }

    });

和HTML来测试它：

And the HTML to test it:

isLoading: {{ isLoading }}
<br/>
<spin-loader>
    <div ui-view>Transcluded</div>
</spin-loader>

<br/>
<button ng-click="toggleLoading()">toggleLoading()</button>

下面是与它普拉克运行： http://plnkr.co/edit/ SetecF03aY6TnQilryWt？p = preVIEW

Here's a Plunk with it running: http://plnkr.co/edit/SetecF03aY6TnQilryWt?p=preview

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