Jquery $("body").height() Returns Undefined

I have a call like this: $('#ContextMenuModal').height($('body').height()); However $('body').height() returns undefined when I view it in Firebug. What would cause jQuery to retu

Solution 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

Solution 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.