将焦点设置为iframe内容 [英] Setting focus to iframe contents

问题描述

我有一个包含 document.onkeydown 事件处理程序的页面，我将其加载到另一个页面的iframe中。我必须点击iframe里面的内容页面才能开始听。

I have a page with a document.onkeydown event handler, and I'm loading it inside an iframe in another page. I have to click inside the iframe to get the content page to start "listening".

有什么办法可以在外部页面中使用JavaScript来将焦点设置到内部页面，这样我就不必在iframe内单击了。

Is there some way I can use JavaScript in the outer page to set the focus to the inner page so I don't have to click inside the iframe?

编辑：回复评论：

上下文是主窗口是一个灯箱式系统，的图片，它显示iframe，每个iframe是一个与keydown / mousemove处理程序的互动页面。这些处理程序不要点火，直到我点击iframe显示灯箱的东西。

The context is the main window is a light-box-like system, except instead of pictures, it shows iframes, and each iframe is an interactive page with keydown/mousemove handlers. these handlers don't fire until I click in the iframe after showing the light-box-thing.

我实际上并没有在传统意义上寻求setFocus与iframe contentDocument中的启用事件处理程序一样多

I'm not actually looking to "setFocus" in the traditional sense as much as "enable event handlers on the iframe contentDocument"

推荐答案

我和jQuery Thickbox有一个类似的问题样式对话框小部件）。我修复我的问题的方式如下：

I had a similar problem with the jQuery Thickbox (a lightbox-style dialog widget). The way I fixed my problem is as follows:

function setFocusThickboxIframe() {
    var iframe = $("#TB_iframeContent")[0];
    iframe.contentWindow.focus();
}

$(document).ready(function(){
   $("#id_cmd_open").click(function(){
      /*
         run thickbox code here to open lightbox,
         like tb_show("google this!", "http://www.google.com");
       */
      setTimeout(setFocusThickboxIframe, 100);
      return false;
   });
});

如果没有setTimeout（），代码似乎不起作用。根据我的测试，它适用于Firefox3.5，Safari4，Chrome4，IE7和IE6。

The code doesn't seem to work without the setTimeout(). Based on my testing, it works in Firefox3.5, Safari4, Chrome4, IE7 and IE6.

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