jquery $(window).height() is returning the document height

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jquery $(window).height() is returning the document height

posted Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

jquery $(window).height() is returning the document height

I'm sure there is a simple error I'm making, but I am simply alerting $(window).height() and it returns the same value as $(document).height().

I am on a 13" MBA and my window height of my browsers when maximised between 780px - 820px (roughly) but each time it returns a window height identical to that of document height. In every case on the site I am working on it is over 1000px.

What is going on here?

alert($(window).height());
alert($(document).height());

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深蓝 · Answer 1 · 2021-10-16T22:31:07+0000

With no doctype tag, Chrome reports the same value for both calls.

Adding a strict doctype like <!DOCTYPE html> causes the values to work as advertised.

The doctype tag must be the very first thing in your document. E.g., you can't have any text before it, even if it doesn't render anything.

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jquery $(window).height() is returning the document height

jquery $(window).height() is returning the document height

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