Question

<script type="text/javascript">     
    var BrowserCompt = document.documentMode;
    document.getElementById("<%=hddnBrowserComp.ClientID %>").value = BrowserCompt;
    alert(BrowserCompt);
</script>

我想在我的页面加载中使用这个hiddenfield（hddnBrowserComp）值，但它是空白的。我怎样才能实现同样的目标？

C#
if(!IsPostBack)
{
string x ="";
x = hddnBrowserComp.Value.ToString();
}

Answer 1

它永远不会那样工作，因为服务器端代码首先执行，然后是客户端代码。

Answer 2

删除！IsPostBack

你有！IsPostBack。所以你遇到了这个问题。首先删除然后尝试。

string x ="";
x = hddnBrowserComp.Value.ToString();

Answer 3

documentMode property only supported in the IE...documentMode property it returns the following value based on the IE versions

5

Internet Explorer 5 mode (also known as "quirks mode").

7

Internet Explorer 7 Standards mode.

8

Internet Explorer 8 Standards mode.

9

Internet Explorer 9 Standards mode.

10

Internet Explorer 10 Standards mode.

Answer 4

if(!isPostback)    
{        
  string x ="";
  x = hddnBrowserComp.Value.ToString();

  ScriptManager.RegisterClientScriptBlock(this, GetType(), "Done", "alert('" + x+"');", true);

}

试试这个会起作用

如何在asp.net中获取页面加载的隐藏字段值？

4 个答案: