jquery html回调 [英] jquery html callback

问题描述

有一个回调的html（）函数或一种方法来检查它是否完成。例如：

  $（＃some_div）。html（'something here'）; 
 
 if（$（＃some_div）。html（）==''）{
 // do something here 
} 
  

我设置一个元素的html从一个帖子。有时它不负载，所以当它不负载我想要它做某事，这是可能的。我现在的方式，它总是做另一件事，因为它hasnt设置html的时候它检查它有html。

解决方案

html（）是同步操作。 DOM的实际更新取决于您的html内容。如果您有< img> 或< iframe> 标记，则需要一些时间才能加载。 html（）后面的下一个语句应该会立即看到新的html内容。

根据您的评论，这可能是您的 $。ajax 失败。不是 html（）。尝试附加一个失败处理程序到ajax调用，并从那里重试？虽然，如果你的服务器端代码以200代码静默失败，失败事件不会被调用。在这种情况下，您可以在将html值设置为元素之前验证该值。

Is there a callback for the html() function or a way to check that it is finished. For example:

$("#some_div").html('something here');

if($("#some_div").html() == ''){
//do something here
}

I am setting the html of an element from a post. Sometimes it doesnt load so when it doesnt load I would like for it to do something, is this possible. The way I have it now it always does the other thing because it hasnt set the html by the time it checks that it has html.

解决方案

html() is a synchronous operation. The actual updating of the DOM depends on what your html content is. If you have <img> or <iframe> tags, they will take time to load. The next statement following the html() should immediately see the new html contents.

Did you mean load() instead?

[Edit] Based on your comment, it is probably your $.ajax failing. Not html(). Try attaching a failure handler to ajax call and retry from there? Although, if your server side code silently fails with a 200 code, the failure event doesn't get called. In that case, you can validate the html value before you set it to the element.

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