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<%=request("aa")%>
<script language="javascript">
<!--
function watch_ini(){ // 初始
for(var i=0; i<arguments.length; i++){
var oOption=new Option(arguments[i],arguments[i]);
document.getElementById("MySelect")[i]=oOption;
}
}
function watch_add(f,prj_vlaue){ // 增加
var oOption=new Option(prj_vlaue,prj_vlaue);
f.keywords[f.keywords.length]=oOption;
}
function watch_del(f){ // 删除
f.keywords.remove(f.keywords.selectedIndex);
}
//-->
</script>
<form name="form1" method="get" action="">
<table width="404" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="400" height="25" ><div id="prjname" ></div></td>
</tr>
<tr>
<select id="MySelect" name="keywords" size="10" ></select>
</tr>
</table>
<input type="submit" value="提交" name="add" />
<input type="button" value="删除" onclick="watch_del(this.form);" />
</form>
function watch_add(f, prj_value) {
f.keywords.add(new Option(prj_value, prj_value), null);
}
//用Select对象的add方法添加选项
//下面这行代码的作用是向id值为MySelect的下拉列表添加一个内容为DEMO、值为TEST的选项
document.getElementById('MySelect').add(new Option('DEMO', 'TEST'), null);
<script language="javascript">
<!--
function watch_ini(){ // 初始
for(var i=0; i<arguments.length; i++){
var oOption=new Option(arguments[i],arguments[i]);
document.getElementById("MySelect")[i]=oOption;
}
}
function watch_add(f){ // 增加
var oOption=new Option(document.getElementById("prjname").innerHTML,document.getElementById("prjname").innerHTML);
f.keywords[f.keywords.length]=oOption;
}
function watch_del(f){ // 删除
f.keywords.remove(f.keywords.selectedIndex);
}
//-->
</script>
<form name="form1" method="get" action="">
<table width="404" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="400" height="25" ><div id="prjname" ></div></td>
</tr>
<tr>
<select id="MySelect" name="keywords" size="10" ></select>
</tr>
</table>
<script language="javascript">
<!--
watch_ini("我","你","妳","他","她","它","尔"); // 初始关键词
//-->
</script>
<input type="button" value="增加" name="add" onclick="watch_add(this.form);"/>
<input type="button" value="删除" onclick="watch_del(this.form);" />
</form>