隐形DIV不可用于JavaScript [英] Invisible DIV not available to JavaScript

问题描述

我敢肯定的回答我的问题是这里的某个地方，但我无法找到它。我很抱歉，如果我重复。

我根据我拉回来的数据有我设置它的可视性页面加载一个DIV。

因此​​，在code背后：

this.divMyDiv.Visible = FALSE

如果用户然后更改下拉值我试图展现DIV

  DIV VAR =的document.getElementById（'divMyDiv'）;
div.style.display =块;
 

如果在div被设置为可见由code背后的初始页面加载所有的罚款。该DIV将显示和隐藏当我改变下拉值。然而，当DIV是隐藏在页面加载在JavaScript中的无功格总是空。我曾尝试 DIV VAR =的document.getElementById（'＆LT;％= divMyDiv.ClientID％GT;'）; ，但我得到了相同的结果。我也曾尝试移动JS到页面的底部。相同的结果。

解决方案

  this.divMyDiv.Visible = FALSE
 

... ...将prevent股利从根本上被渲染和JavaScript无法找到它。如果你仍然想渲染它，并使用显示：无来隐藏它，你会想要做的;

  this.divMyDiv.Style [显示] =无;
 

Im sure the answer to my question is here somewhere but I cannot find it. I apologise if I have duplicated.

I have a DIV that I set its visiblity on page load depending on the data I pull back.

So in the code behind:

this.divMyDiv.Visible = false

If the user then changes a drop down value I try to show the DIV

var div = document.getElementById('divMyDiv');
div.style.display = 'block';

If the div is set to visible by the code behind on the initial page load all is fine. The DIV will show and hide when I change the drop down value. However when the DIV is hidden on page load the var div in the JavaScript is always null. I have tried var div = document.getElementById('<%=divMyDiv.ClientID%>'); but I get the same results. I have also tried moving the JS to the bottom of the page. Same results.

解决方案

this.divMyDiv.Visible = false

...will prevent the div from being rendered at all and Javascript can't find it. If you still want to render it and use display:none to hide it, you'll want to do;

this.divMyDiv.Style["display"] = "none";

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