Trying to use .js file for dropdownlist autocomplete

[bubberz]

I'm trying to use a .js file to get autocomplete on a dropdownlist control in my ASP.NET application, but keep getting a syntax error.

The error on the .js file is:

Line 15, Char 1, Object Expected:

var keys;
var timeStamp;
timeStamp = new Date();
function dd_onkeypress(DropDownList1) {
var key = event.keyCode;
event.returnValue=false;
//a-z, A-Z, 0-9
if ((key>=97 && key<=122) || (key>=65 && key<=90) || (key>=48 && key<=57)) {
key = String.fromCharCode(key);
var now = new Date();
var diff = (now.getTime() - timeStamp.getTime());
timeStamp = new Date();
//1 seconds = 1000 milliseconds<BR>
if (diff > 1000) {
keys = key;
} else {
keys = keys + key;
}
var cnt;
for (cnt=0;cnt<document.all
(DropDownList1).children.length;cnt++) {
var itm = document.all(DropDownList1).children[cnt].text;
if (itm.substring(0,keys.length).toLowerCase()==keys.toLowerCase())
{
document.getElementById(DropDownList1).selectedIndex = cnt;
break;
}
}
}
//document.all(DropDownList1).onchange();
}

In my Page_Load .aspx page, I've got:
DropDownList1.Attributes.Add("onkeyup", "javascript:return dd_onkeypress(this);")

[administrator]

Can you please tell us, which line is line 15?
_________________
Peter
ASP & ASP.NET Articles and Tutorials

[bubberz]

Line 15 is:

keys = keys + key;

[bubberz]

Sorry, the "Object Expected" is pointing to the HTML line of the .aspx page for the asp:dropdownlist tag, and not the .js file

[administrator]

Please post your ASP.NET code-behind and let me know which is line 15?
_________________
Peter
ASP & ASP.NET Articles and Tutorials

[bubberz]

Thanks so much for helping!

The code behind is:

DropDownList1.Attributes.Add("onkeypress", "javascript:dd_onkeypress(this);return false;")

Line 15 is the HTML of: <asp:dropdownlist

[administrator]

Have you declared DropDownList1?
_________________
Peter
ASP & ASP.NET Articles and Tutorials