Dynamically imports an element behavior.
dhtml语法
namespace.doImport(sUrl)
Parameters
| sUrl |
Required.
String that specifies the URL of the element behavior to import into the namespace. |
Return Value
No return value.
Remarks
Once imported into a namespace by this method, an element behavior can be used on the page where the namespace has been declared.
Using this method alone is not enough to enable a element behavior to function on a Web page; it is also necessary to add a custom element to the body of the primary document, as illustrated in the following code snippet.
<body>
<myns:mycustomtag/>
</body>
The preceding sample shows how a custom element makes use of a custom namespace, which is declared on the xmlns attribute of the html tag.
a script or binary behavior can also be used to insert a custom element. see the examples that follow for an illustration of this technique.
Examples
The following example declares a namespace called "TESTNS" and imports the default Microsoft® Internet Explorer behaviors into it.
<HTML XMLNS:TESTNS>
<HEAD>
<SCRIPT LANGUAGE="JScript">
document.namespaces("TESTNS").doImport("#default");
</SCRIPT>
</HEAD>
The following example shows how the doImport method can be used in conjunction with the createelement to insert a custom element to which an element behavior is attached.
<HTML xmlns:myns>
<BODY onload=Load()>
<SCRIPT>
var ns; // holds the newly created namespace object
function Load()
{
ns = document.namespaces[0];
ns.doImport("redbg.htc");
if(ns.readyState != "complete")
{
// Wait for the element behaviors to finish downloading
ns.attachEvent("onreadystatechange", addTagnamesToBody);
}
else
{
addTagnamesToBody();
}
return true;
}
function addTagnamesToBody()
{
if(ns.readyState != "complete") return;
var v = document.createElement("myns:abc");
v.innerText = "ElementBehavior";
document.body.appendChild(v);
ns.detachEvent("onreadystatechange", addTagnamesToBody);
}
</SCRIPT>
</BODY></HTML>
The following code shows the content of the HTML Component (HTC) file, redbg.htc, which simply applies a red background when the ondocumentready event fires.
<public:component tagName=abc >
<public:attach event=ondocumentready onevent=Doc_Ready() />
</public:component>
<script>
function Doc_Ready() {
element.document.bgColor = "red";
}
</script>
是否符合公共标准
There is no public standard that applies to this method.
Applies To
更多语法参考
import, introduction to viewlink, About Element Behaviors