offsetWidth Property

Retrieves the width of the object relative to the layout or coordinate parent, as specified by the offsetParent property.

Syntax

HTML N/A

Scripting [ iWidth = ] object.offsetWidth

HTML	N/A
Scripting	[ iWidth = ] object.offsetWidth

Possible Values

iWidth Integer that specifies the width, in pixels.

The property is read-only with no default value.

Remarks

You can determine the location, width, and height of an object by using a combination of the offsetLeft, offsetTop, offsetHeight, and offsetWidth properties. These numeric properties specify the physical coordinates and dimensions of the object relative to the object's offset parent.
For more information about how to access the dimension and location of objects on the page through the document object model, see Measuring Element Dimension and Location.

Example

This example adjusts the size of a clock's readout to fit the current width and height of the document.

Sample Code
<HTML>
<HEAD><TITLE>A Simple Clock</TITLE>
<SCRIPT LANGUAGE="JScript">
function startClock()
{
    window.setInterval("Clock_Tick()", 1000);
    Clock_Tick();
}

var ratio = 4;
function Clock_Tick()
{
    var s = Date();
    var t = s.substring(11,19);
    var doc_height = document.body.offsetHeight;
    var doc_width = document.body.offsetWidth;

    if ((doc_height*ratio)>doc_width)
        doc_height = doc_width / ratio;
        document.all.MyTime.innerText = t;
        document.all.MyTime.style.fontSize = doc_height;
}
</SCRIPT>
<BODY onload="startClock()">
<P ID="MyTime">&nbsp;</P>
</BODY>
</HTML>
This example uses the offsetWidth property and the clientWidth property to show the different ways of measuring the object size.
<DIV ID=oDiv STYLE="overflow:scroll; width:200; height:100"> . . . </DIV>
<BUTTON onclick="alert(oDiv.clientWidth)">client width</BUTTON>
<BUTTON onclick="alert(oDiv.offsetWidth)">offset width</BUTTON>
This feature requires Microsoft® Internet Explorer 4.0 or later. Click the icon below to install the latest version. Then reload this page to view the sample.

Applies To

[ Object Name ]

Platform Version

Win16:

Win32:

Mac:

Unix:

WinCE:

Version data is listed when the mouse hovers over a link, or the link has focus.

A, ACRONYM, ADDRESS, APPLET, AREA, B, BDO, BIG, BLOCKQUOTE, BODY, BR, BUTTON, CAPTION, CENTER, CITE, CODE, COL, COLGROUP, custom, DD, DEL, DFN, DIR, DIV, DL, DT, EM, EMBED, FIELDSET, FONT, FORM, FRAME, Hn, HR, I, IFRAME, IMG, INPUT type=button, INPUT type=checkbox, INPUT type=file, INPUT type=image, INPUT type=password, INPUT type=radio, INPUT type=reset, INPUT type=submit, INPUT type=text, INS, KBD, LABEL, LEGEND, LI, LISTING, MAP, MARQUEE, MENU, NEXTID, NOBR, OBJECT, OL, OPTION, P, PLAINTEXT, PRE, Q, RT, RUBY, S, SAMP, SELECT, SMALL, SPAN, STRIKE, STRONG, SUB, SUP, TABLE, TBODY, TD, TEXTAREA, TFOOT, TH, THEAD, TR, TT, U, UL, VAR, XMP