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I logged the height and padding values using this code:

jQuery( document ).ready( function() {

    console.log( jQuery('body').css('height') );
    console.log( jQuery('body').css('padding-top') );
    console.log( jQuery('body').css('padding-bottom'));

}); //end ready

This outputs:

20px
0px
0px

If the height of the body is only 20 pixels, why does the entire background of the browser change black when I use this CSS:

body {
    background: black;
}

I'm using Chrome as my browser. If you're curious as to how I ran into this question, I ran into a problem of adding a click event to the body that didn't ever seem to fire due to the body's default height.

I logged the height and padding values using this code:

jQuery( document ).ready( function() {

    console.log( jQuery('body').css('height') );
    console.log( jQuery('body').css('padding-top') );
    console.log( jQuery('body').css('padding-bottom'));

}); //end ready

This outputs:

20px
0px
0px

If the height of the body is only 20 pixels, why does the entire background of the browser change black when I use this CSS:

body {
    background: black;
}

I'm using Chrome as my browser. If you're curious as to how I ran into this question, I ran into a problem of adding a click event to the body that didn't ever seem to fire due to the body's default height.

  • javascript
  • jquery
  • css
Share Improve this question asked Mar 31, 2014 at 19:09 KacyKacy 3,4305 gold badges33 silver badges61 bronze badges 7
  • 1 Body refers to the hole <body></body> tag. If I were you I would add a div inside your body and change the property of this div. – ooo Commented Mar 31, 2014 at 19:10
  • Does it happen even when you set html{ background:blue; } for example? – Michał Commented Mar 31, 2014 at 19:20
  • @Michał Yes, the whole page turns blue using html{ background:blue; } – Kacy Commented Mar 31, 2014 at 19:22
  • And the 20px high <body> remains black? – Michał Commented Mar 31, 2014 at 19:23
  • 1 Check this post – tliokos Commented Mar 31, 2014 at 19:28
 |  Show 2 more ments

4 Answers 4

Reset to default 7

A long time ago there was something called document.bgcolor, or something like that, that would let you set the background of the document itself, but that was deprecated.

Instead it was decided that setting document.body.style.backgroundColor, or in other words setting the background of the body, would also set the background color for the document automagically, as the document object has no style property, but it's still visible when the body/html elements does not pletely cover the document, that's why the entire page goes black even if the body element does not cover the entire document.

The element contains all the contents of an HTML document, such as text, hyperlinks, images, tables, lists, etc.

Says the definition at w3schools. Having in mind this definition, if the <html> element doesn't the style of <body> is considered representation of the document's style. Our little investigation from the ments proves this.

Edit:

Didn't see the ment from the question. The link by tliokos mentions the same.

If you really want a click event on a full-sized body, try this: 

body{
    background-color: black;
    min-height: 100%;
    padding: 0;
    margin: 0;
}

Firstly you have to understand what is the body, and bare in mind the body is everything you see when page loads so in order to divide your page add a div or table and change its background.

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