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原标题:Intermittent iFrame Height

我有这一法典:

<script type="text/javascript">  
     window.fbAsyncInit = function() { 
     FB.Canvas.setSize({ height: 6000 }); 
} 
window.fbAsyncInit();   
</script>

这使我的iFrame在50%的时间上正确无误。 其他50%的时间没有消化,以下错误出现在我的专册上:

Uncaught ReferenceError: FB is not defined
window.fbAsyncInit:122
(anonymous function)

我首先认为,这是错误的,因为我是如何把Facebook Javascript SDK带进来的,但为什么有时而不是在其他时候工作?

最佳回答

Might be "race condition" of some sort, so just wait until FB is defined:

window.fbAsyncInit = function FbAsynchInit() { 
     if (typeof FB != "undefined" && FB) {
         FB.Canvas.setSize({ height: 6000 }); 
     } else {
         window.setTimeout(FbAsynchInit, 10);
     }
} 

当FB获得定价时,它将在每10毫米秒时检查,直至确定。

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