how to call a javascript function from content page which was declared in master page?

Hi,

Use Scripting Generator methods.

---

<asp:Content ID="Content3" ContentPlaceHolderID="Content" Runat="Server" >

<input type="text" name="Message" runat="server">

<input name="TextBox1" type="button" runat="server" value="ClickMe" onclick="DoClick()">

</asp:Content>

---

protected void Page_Load(object sender, EventArgs e)

{

// Define the name and type of the client scripts on the page.

String csname = "ButtonClickScript";

Type cstype = this.GetType();

// Get a ClientScriptManager reference from the Page class.

ClientScriptManager cs = Page.ClientScript;

// Check to see if the client script is already registered.

if (!cs.IsClientScriptBlockRegistered(cstype, csname)){

StringBuilder cstext2 = new StringBuilder();

cstext2.Append("<script type='text/javascript'> function DoClick() {");

cstext2.Append("document.forms[0].Message.value='Text from client script.'} </");

cstext2.Append("script>");

cs.RegisterClientScriptBlock(cstype, csname, cstext2.ToString(), false);

}

}

Regards,

Omer kamal

I'm new to asp.net, but what about putting this in the Page_Load event of the master page:

Response.Write("<SCRIPT LANGUAGE='JavaScript' src='" & Server.MapPath("~/Scripts/filename.js") & "'></SCRIPT>")

are there any problems to doing this?

also, did I misunderstand the question?

Thanks c# - do I add it the same way that I wrote or do I do it with other vb/c# functions?

Thanks again. Here's what I did:

in the master page Page_Load event I have:

Page.ClientScript.RegisterStartupScript(Me.GetType(), "commonjsfile", "<SCRIPT LANGUAGE='JavaScript' src='" & Request.ApplicationPath & "/Scripts/Js/Javascriptfile.js" & "'></script>")

I did have it just saying response.write("<script src...">) but I guess this is the wrong way to do it.

My questions:

1. like I said above, i put that script thing in the master's page_load event - should I put it in the prerender event?

2. In order to add/set attributes to elements(like onClick), I was putting them in the Page_Load event. Is the better place in the Page_PreRender event or the individual elements Init() event or ? - and why?

3. If I want to set something in the Style attribute, can I just say attributes("style") = "display:none;" or do I need to say attributes("style") &= "display:none:" to add to the style? - note: I just tried a couple of things: if I just say = instead of &=, then the other style attributes aren't applied to the element. However, by using &= to add to the style, when this page is postedback, then thst style of the element has multiple entries ex: "display:none;display:none". So I guess the thing to do is check if "display:none" is in the style attribute before adding it. correct?

I'm new to asp (much less asp.net) - i don't even code in vb or c#, but it's not that bad. I code in foxpro of all things lol (and yes i'm using connections to vfp tables instead of sql server or access)

Thanks...This blog was really useful!!!

you may use document.getElementByID('<%=yourControl.ClientID%>') to get the real ID of the control when it is rendered

But what if I want to pass yourControl as a parameter to the javascript function ? I want to make it work something like this...

Something like...

function test(x){

alert(document.getElementById("<%=x.ClientID%>").value);

}

But the above code throws error...want the parameter 'x' to be replaced by my control name.

Any help would be really appreciated.

Thanks

- webchetan