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/*
JavaScript Bible, Fourth Edition
by Danny Goodman
John Wiley & Sons CopyRight 2001
*/
<HTML>
<HEAD>
<TITLE>insertBefore() Method</TITLE>
<SCRIPT LANGUAGE="JavaScript">
function doInsert(form) {
if (form.newText) {
var newChild = document.createElement("LI")
newChild.innerHTML = form.newText.value
var choice = form.itemIndex.options[form.itemIndex.selectedIndex].value
var insertPoint = (isNaN(choice)) ?
null : document.getElementById("myUL").childNodes[choice]
document.getElementById("myUL").insertBefore(newChild, insertPoint)
}
}
</SCRIPT>
</HEAD>
<BODY>
<H1>insertBefore() Method</H1>
<HR>
<FORM onSubmit="return false">
<P>Enter text or HTML for a new list item:
<INPUT TYPE="text" NAME="newText" SIZE=40 VALUE=""></P>
<P>Before which existing item?
<SELECT NAME="itemIndex">
<OPTION VALUE=null>None specified
<OPTION VALUE=0>1
<OPTION VALUE=1>2
<OPTION VALUE=2>3
</SELECT></P>
<INPUT TYPE="button" VALUE="Insert Item" onClick="doInsert(this.form)">
</FORM>
<OL ID="myUL">
<LI>Originally the First Item
<LI>Originally the Second Item
<LI>Originally the Third Item
</OL>
</BODY>
</HTML>
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