value (W3C DOM Core property)
| Version | Depr. | Static | Read-only |
|---|---|---|---|
| DOM1 | No | No | No |
| IE6+ | FF1.5+ | SA3+ | OP9+ |
|---|---|---|---|
| Buggy | Full | Full | Buggy |
Example
var attrs = document.documentElement.attributes;
for(var i=0; i<attrs.length; i++)
{
var val = attrs[i].value;
}In the example above we create a reference to the documentElement attributes collection, then we iterate through the
collection numerically and retrieve the value of
each individual attribute.
Description
The value of an Attr node.
When retrieving, this is a parsed
string (ie. entities have been expanded) containing the value of the
attribute. When setting, the specification states that a Text node should be created containing the specified
string (which is unparsed, so even if it contains characters that an
interpretor would recognize as markup, these are treated as literal text).
However in practise this is usually not the case, and a DOMString
value is created instead; please see Attr for more
details.
The value of an Attr node is exactly the same as its nodeValue.
This property is read/write.
Compatibility
| Internet Explorer | Firefox | Safari | Opera | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5.5 | 6.0 | 7.0 | 1.5 | 2.0 | 3.0 | 1.3 | 2.0 | 3.0 | 9.0 | 9.5 |
| Partial | Buggy | Buggy | Full | Full | Full | Buggy | Buggy | Full | Buggy | Buggy |
In Safari 1.3 and 2 this property is readonly (ie. it cannot be used to set the value, only retrieve it).
Internet Explorer 6 and 7 in HTML return
null for the value of a
style attribute.
Internet
Explorer 5.5 in HTML cannot retrieve attribute nodes, only
attribute values; although attribute values do inherit the nodeValue property of Node,
they do not expose a value property (it returns
undefined).
Opera 9.0 in pure XML (but
not XHTML mode1) parses entities when
setting the value of an attribute (contrary to
the specification).
Footnotes
1 On XHTML pages served as
application/xhtml+xml.
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