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POHow to let angularjs show fast part first, then render slow part?
 

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  1. POHow to let angularjs show fast part first, then render slow part?
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    <p>I have a big angularjs html page, the rendering of angularjs will take a lot of time. So the page is almost blank at first, and after a while, it shows everything suddenly.</p> <p>I wonder if there is any way to make the fast part shows first, and the slow part will show later, so the user won't be surprised by a blank page.</p> <p>I made a simple demo:</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html ng-app&gt; &lt;head&gt; &lt;meta charset="UTF-8"&gt; &lt;script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.4/angular.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body ng-controller="Ctrl"&gt; &lt;button ng-click="go()"&gt;Go&lt;/button&gt; &lt;hr/&gt; &lt;div&gt;Fast&lt;/div&gt; &lt;button ng-repeat="name in fastNames"&gt;{{name}}&lt;/button&gt; &lt;hr/&gt; &lt;div&gt;Slow&lt;/div&gt; &lt;button ng-repeat="name in slowNames"&gt;{{name}}&lt;/button&gt; &lt;/body&gt; &lt;/html&gt; &lt;script type="text/javascript"&gt; function Ctrl($scope) { $scope.fastNames = []; $scope.slowNames = []; $scope.go = function () { $scope.fast(); $scope.slow(); } $scope.fast = function() { $scope.fastNames = ["F1", "F2"]; }; $scope.slow = function() { for (var i = 0; i &lt; 50000000; i++) { new Date(); } $scope.slowNames = ["S1", "S2"]; } } &lt;/script&gt; </code></pre> <p>You can see there are two parts -- "fast names" and "slow names". I hope the fast names can show as soon as possible, then the slow names. But for now, they won't show at first, and after a while, they show together.</p> <p>I created a live demo: <a href="http://plnkr.co/edit/9lW2TbLBkCB1hhgBVGmo?p=preview" rel="nofollow">http://plnkr.co/edit/9lW2TbLBkCB1hhgBVGmo?p=preview</a></p> <p>What should I do?</p>
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    1. COUntil go() returns, the view won't update. Split your go() function up into two pieces: gofast() and goslow(). Call goslow() in a timeout or something to allow gofast() to return before goslow() starts.
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      1. USMark Rajcok
    2. COIt seems work: <http://plnkr.co/edit/uI7gROjmlA6SCFD0SpXh?p=preview>, but is it the "angularjs way" to do it? I need to add a `$scope.$digest()` manually.
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    3. COI just found it works on chrome, but not on firefox.
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