级联选择控件 JS
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">...
<!--
var cities = new Array(4);
cities["Australia"] = ["Sydney","Melbourne"];
cities["France"] = ["Paris","Lyon"];
cities["Japan"] = ["Tokyo","Kyoto"];
cities["New Zealand"] = ["Auckland","Wellington"];
function removeOption(optionMenu)
...{
for (var i=0;i<optionMenu.options.length ;i++ )
...{
optionMenu.options[i] = null;
}
}
function addOptions(optionList,optionMenu)
...{
removeOption(optionMenu);
for (var i=0;i < optionList.length ;i++ )
...{
optionMenu[i] = new Option(optionList[i],optionList[i]);
}
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<FORM METHOD=POST ACTION="" name="testform">
国家: <SELECT NAME="country" onchange="addOptions(cities[this.options[this.selectedIndex].text],document.testform.city);">
<OPTION VALUE="" SELECTED>Australia</option>
<OPTION VALUE="">France</OPTION>
<OPTION VALUE="">Japan</OPTION>
<OPTION VALUE="">New Zealand</OPTION>
</SELECT>
<br>
城市<SELECT NAME="city">
<OPTION VALUE="">Sydney</OPTION>
<OPTION VALUE="">Melbourne</OPTION>
</SELECT>
</FORM>
</BODY>
</HTML>
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