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Passing parameter from HTML to javascript function

I am trying to pass a html control value to a javascript function. My field is ifWOnumber, but when it opens the page the URL says

csserialization_printWO?number=undefined

function PrintThisPage(ord_no) {
var sOption = "toolbar=yes,location=no,directories=yes,menubar=yes,";
var ord = document.getElementById("ifWOnumber").value;
sOption += "scrollbars=yes,width=750,height=600,left=100,top=25";
var winprint = window.open("CSSerialization_PrintWO.aspx?number=" + ord, "Print", sOption);

winprint.focus();
}

What am I doing wrong?

Gary

Assuming inline js

var ord = document.getElementById("<%= ifWOnumber.ClientID %>").value;

red_75116

ASKER

The pop up window opens, but this is the URL on the page
CSSerialization_PrintWO.aspx?number=undefined

Gary

If you view the page source what is the id of ifWOnumber - is it just ifWOnumber or some .net inspired ID

Miguel Oz

Use UniqueID to get the required value:
var ord = document.getElementById("<%= ifWOnumber.UniqueID %>").value;

Your control's container is introducing prefixes thus the need for UniqueID to identify the control. This solution only works for inline JS not if the method is declared in a JS file.

Where is PrintThisPage called/declared?Inline?

red_75116

ASKER

Using a custom control called inputfield and the id is ifWOnumber

ASKER CERTIFIED SOLUTION

Gary

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