CSS Property: background-attachment
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The CSS (CSS1) background-attachment property indicates
whether a background image is fixed or scrolls with the rest of the page.
Valid property values
(other than inherit
and initial) are:
|
Value
|
Description
|
|
fixed
|
Background is fixed in
relation to viewport
|
|
local
|
Background scrolls
along with the element’s contents
|
|
scroll
|
(default value).
Background scrolls along with the element
|
|
Default Value:
|
scroll
|
|
JavaScript syntax:
|
e.g. object.style.backgroundAttachment="fixed"
|
|
Inherited:
|
No
|
|
Animatable:
|
No
|
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head>
<style>
p {width: 200px; background-image: url(NematrianLogo.png);}
p.x1 {background-attachment: fixed;}
</style>
</head>
<body>
1. Element with default property<br>
<p>1</p><br><br>
2. Element set using in-file HTML style
<p class="x1">2</p><br><br>
3. Element set using JavaScript
<p id="x2">3</p>
<script>
document.getElementById("x2").style.backgroundAttachment =
"fixed";
</script>
</body>
</html>
|
FUNCTION THAT MAY ASSIST IN TESTING WHETHER FEATURE IS SUPPORTED:
function isSupportedCSSPropertyBackgroundAttachment() {
var x = document.createElement("DIV"); x.style.backgroundAttachment = "fixed"; return (window.getComputedStyle(x, null).backgroundAttachment == "fixed");
} |
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