how to return a value from JavaScript to pageload function
Question
I am calling my JavaScript function in page load
JScript File:
function fnCheckBrowserType()
{
if(navigator.appName == "Microsoft Internet Explorer" || navigator.appName == "Netscape")
{
//document.all["HhdnBrowsertype"].value=navigator.appName
document.all["HhdnBrowsertype"].value="1"
alert(document.getElementById("HhdnBrowsertype").value);
}
else
{
//document.getElementById("HhdnBrowsertype").value = navigator.appName
document.all["HhdnBrowsertype"].value="0"
alert(document.getElementById("HhdnBrowsertype").value);
}
}
ASP.NET code behind:
protected void Page_Init(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(typeof(string), "fnCheckBrowserType", "fnCheckBrowserType();", true);
if (HhdnBrowsertype.Value.ToString() == "1")
{
int IE = 1;
}
else
{
int opera = 0;
}
}
HTML:
<script src="Browsers.js" type="text/javascript"></script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<%--<input id="HhdnBrowsertype" type="hidden" name="HhdnBrowsertype" runat="server" />--%>
<asp:HiddenField ID="HhdnBrowsertype" runat="server" />
</div>
</form>
</body>
In pageload i am calling my javascript function here i am setting the hiddden field value "0" or "1" based on the browser type but in page load HhdnBrowsertype value is always empty
is there anyway from javacript i return an value based on that value i set my hidden field in page load
Please help in me how i can return an vlaue "0" or "1" from javscript to page load function
thanks
2 answers
solution1
1 2011-05-03 14:32:11
You're doing it the wrong way.. to do it server side have such code:
protected void Page_Init(object sender, EventArgs e)
{
string browser = Request.Browser.Browser;
...
}
For IE (all versions) it will return "IE", Chrome will return "Chrome" etc..
solution2
0
If you want to detect the browser type in code behide then use
Request.Browser.Browser
this will give the browser type like IE
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