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width property (document)

Browser support:
Retrieves the width of the browser window's client area.
It is not recommended to use this property.


You can find the related objects in the Supported by objects section below.
This property is read-only.

Possible values:

Integer that sets or retrieves the width of the document, in pixels.
Default: this property has no default value.

Example HTML code 1:

This example illustrates the use of the width property:
    <script type="text/javascript">
        function GetDocSizes () {
            alert ("width x height: " + document.width + " x " + document.height);
    <button onclick="GetDocSizes ();">Get document dimensions!</button>
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