The CSS reference
"overflow" - css property (v. css 2)
- To specify what happens if content overflows the box of an element
- Initial value: visible
- The property is not inherited
- HTML usage: non-replaced block-level elements, table cells, inline-table, and inline-block elements
-
Browsers that support the overflow - property :
Possible overflow values:
overflow value | Comments | CSS |
---|---|---|
visible | Indicates that content is not clipped, i.e., it may be rendered outside the block box. | 2 |
Indicates that the content is clipped and that no scrolling user interface should be provided to view the content outside the clipping region. | 2 | |
scroll | Indicates that the content is clipped and uses a scrolling mechanism that is visible on the screen (such as a scroll bar or a panner), that mechanism should be displayed for a box whether or not any of its content is clipped. | 2 |
auto | The behavior of this value is user agent-dependent, but should cause a scrolling mechanism to be provided for overflowing boxes. | 2 |
inherit | Will inherit the value from parent specification. | 2 |
Property "overflow" example:
<!DOCTYPE HTML >
<html>
<head>
<script type="text/javascript">
function changeOverflow(value) {
document.getElementById("p1").style.overflow=value;
}
</script>
<style type="text/css">
#p1 { width: 190px; height: 80px;
}
</style>
</head>
<body >
<h1 >CSS Selectors</h1>
<p id="p1">One of the primary advantages of
CSSparticularly to designersis its ability to
easily apply a set of styles to all elements
of the same type. Unimpressed? Consider this:
by editing a single line of CSS, you can change
the colors of all your headings.</p>
<br/><br/><br/>
<div>
<input type="button" onclick="changeOverflow('hidden')"
value="Paragraph to overflow: hidden" /><br/>
<input type="button" onclick="changeOverflow('visible')"
value="Paragraph to overflow: visible" /><br/>
<input type="button" onclick="changeOverflow('auto')"
value="Paragraph to overflow: auto" /><br/>
<input type="button" onclick="changeOverflow('scroll')"
value="Paragraph to overflow: scroll" /><br/>
</div>
</body>
</html>
Javascript access:
// To SET values ([o] is the target object)
[o].style.overflow="overflow value"
// To GET values you must first get the computed style object
// To get that object in IE or Opera:
var cStyle=[o].currentStyle;
// To get that object in Firefox, Chrome or Safari (w3c-type):
var cStyle=window.getComputedStyle([o],null)
// To GET the property value:;
var value=cStyle.overflow;
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