jQuery $(“body”).height() returns undefined

Question

I have a call like this:

$(\"#ContextMenuModal\").height($(\"body\").height());

However $(\"body\").height() returns undefined

Answer 1

Simply use

$(document).height() // - $('body').offset().top

and / or

$(window).height()

instead $('body').height()

To expand a bit,

$(window).height();   // returns height of browser viewport
$(document).height(); // returns height of HTML document

As bažmegakapa points out, there is a slight difference, albeit a few pixels. The true height of the body can be calculated by subtracting the body offset from the document height (like I mentioned above):

$(document).height() - $('body').offset().top

Answer 2

Use this-

 $("body").css("height")

well i will say jquery is not needed-

this.style.height;//it will not work if you add it as inline js.