调用Java脚本返回值在asp.net code页面 [英] calling java script return value to code page in asp.net

问题描述

我想我的Java脚本函数返回值打电话给我的code结果
我有这样的函数。（这个我在Java脚本写的）

i want to call my java script function return value to my code
i have a function like this..(this i wrote in my java script)

function GetSex()
{

    var sex = EIDAWebComponent.GetSex();
    if(sex == 'M')
        return "Male";
    if(sex == 'F')
        return "Female";
    if(sex == 'X')
        return "Unknown";
}

我的code：

<td>
    <span>Sex:&nbsp;</span>
</td>
<td>
    <span id="Sex_PDLabel" runat=server></span>
</td>

我怎么可以叫我的code这个返回值？
我想获得相应价值的任何变量。所以要尽量写code是这样的：

how i can call this return value in my code? i want to get corresponding value to any variable. so try to write code something like this:

 ScriptManager.RegisterStartupScript(DirectCast(HttpContext.Current.Handler, Page), GetType(Page), "GetSEx", "GetSex()", True)
 Dim SexVAl = Sex_PDLabel.InnerText

但我始终sexVal空越来越不string.i知道为什么吗？我的code中的问题是什么？

but my sexVal Always getting empty string.i dont know why? what is the problem with my code?

任何帮助是非常appriciable ..

any help is very appriciable..

推荐答案

使用此。

ASPX：
创建一个隐藏字段存储的值。

aspx: Create a hidden field to store the value.

<input type="hidden" id="txtHidden" runat="server" />

JavaScript的code：

javascript code:

function GetSex()
{
    var sex = EIDAWebComponent.GetSex();
     alert(sex);
    if(sex == 'M')
        document.getElementById("txtHidden").value=  "Male";
    else if(sex == 'F')
        document.getElementById("txtHidden").value =  "Female";
    else if(sex == 'X')
        document.getElementById("txtHidden").value =  "Unknown";
    else
        document.getElementById("txtHidden").value =  "none";
}

从ASP.NET code呼叫：

Call from ASP.NET code:

ScriptManager.RegisterStartupScript((Page)(HttpContext.Current.Handler), 
                  typeof(Page), "GetSex", "GetSex();", true);

String value = txtHidden.Value;

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