Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
Note: Starting in Gecko 6.0, document.width is no longer supported. Instead, use document.body.clientWidth. See element.clientWidth.
Returns the width of the <body> element of the current document in pixels.
Not supported by Internet Explorer.
pixels = document.width;
function init() {
alert("The width of the document is " + document.width + " pixels.");
}
document.body.clientWidth /* width of <body> */ document.documentElement.clientWidth /* width of <html> */ window.innerWidth /* window's width */
HTML5
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/document/width