javascript not recognizing textobject

[kaisersoze]

hi,

I have a asp:textbox object in the page. I am loading a value into the textbox from server-side. When user clicks on a link, javascript should pick the value from the text box and should show an alert depending on the if stmt.

I know i should do something lke this:

 

var v = document.getElementById("txtPath").value;

 

I get error of i do like that (object cannot be null something of that sort)

I right clicked and said view source code, I see _ctl1_ is added to txtpath. If i use "_ctl1_txtPath" then it works. why is it happening like this.

[Robby]

You need to give an ID to your controls, otherwise they will be named automaticaly

[kaisersoze]

You need to give an ID to your controls' date=' otherwise they will be named automaticaly[/quote']

 

Yes I gave an id.

 

<asp:textbox ID="txtPath" Visible=False Runat=server></asp:textbox>

 

and in javascript:

var v = document.getElementById("txtPath").value;

 

It still adds _ctl1_ to txtpath

Edited April 27, 2004 by kaisersoze

[Cassio]

Is your textbox inside a datagrid, datalist or something like it?

[kaisersoze]

No. it is in a user control and the usercontrol is called in a .aspx page.

[bungpeng]

That's why, what is your user control name in your aspx page?

If I not mistaken, the control in user control when place it to aspx page, the name will automatic change base on [user control name]_[original name], and the Id is [user control name]:[original name]

[kaisersoze]

That's why, what is your user control name in your aspx page?

If I not mistaken, the control in user control when place it to aspx page, the name will automatic change base on [user control name]_[original name], and the Id is [user control name]:[original name]

 

for example:

my user control is uc1 and text box id, inside uc1 is txt1. I am writing a javascript function in side uc1 control. uc1 is placed inside page1.aspx.

 

function getMessage () {

var v1 = document.getElementById("uc1_txt1").value;

alert(v1);

}

 

is this correct if yes it still gives me error.