本文介绍了一个用于网页中权限分配的JavaScript脚本实现方法。该脚本能从所有可用权限列表中选择并添加到指定用户的权限列表中，同时避免重复添加相同的权限项。此外，还提供了一种方式来移除已分配的权限。
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script language="javascript">
function doquanxian()
{
var flags=0;
var selectobj = document.all.myquanxian;
var employename = '<%=employename%>';
text = document.all["allquanxian"].options[document.all["allquanxian"].selectedIndex].text;
value = document.all["allquanxian"].options[document.all["allquanxian"].selectedIndex].value ;
for(var i=0;i<selectobj.length;i++)
{
if(selectobj.options[i].value==value)
{
flags=1;
}
}
if(flags==1)
{
alert(value+"在"+employename+"的权限列表中已存在!");
}
if(flags==0)
{
selectobj.add(document.createElement("option"));
selectobj.options[selectobj.length-1].text=text;
selectobj.options[selectobj.length-1].value=value;
}
}
function watch_del(){ // 删除
document.all.myquanxian.remove(document.all.myquanxian.selectedIndex);
}
</script>
</head>
<body>
<table width="322" border="1">
<tr>
<td width="135" align="center"><%=employename%>的权限</td>
<td width="30"> </td>
<td width="135" align="center">所有权限</td>
</tr>
<tr>
<td height="205">
<select name="myquanxian" size="15">
<option value="a">a</option>
</select>
</td>
<td><input type="submit" name="Submit" value="<<" onclick="doquanxian()">
<br><input type="submit" name="Submit2" value=">>" onclick="watch_del()">
</td>
<td>
<select name="allquanxian" size="15" ondblclick="doquanxian()">
<option value="shenqingren">申请人</option>
<option value="jingbanren">经办人</option>
<option value="fuzeren">负责人</option>
<option value="shenpiren">审批人</option>
</select>
</td>
</tr>
</table>
</body>
</html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script language="javascript">
function doquanxian()
{
var flags=0;
var selectobj = document.all.myquanxian;
var employename = '<%=employename%>';
text = document.all["allquanxian"].options[document.all["allquanxian"].selectedIndex].text;
value = document.all["allquanxian"].options[document.all["allquanxian"].selectedIndex].value ;
for(var i=0;i<selectobj.length;i++)
{
if(selectobj.options[i].value==value)
{
flags=1;
}
}
if(flags==1)
{
alert(value+"在"+employename+"的权限列表中已存在!");
}
if(flags==0)
{
selectobj.add(document.createElement("option"));
selectobj.options[selectobj.length-1].text=text;
selectobj.options[selectobj.length-1].value=value;
}
}
function watch_del(){ // 删除
document.all.myquanxian.remove(document.all.myquanxian.selectedIndex);
}
</script>
</head>
<body>
<table width="322" border="1">
<tr>
<td width="135" align="center"><%=employename%>的权限</td>
<td width="30"> </td>
<td width="135" align="center">所有权限</td>
</tr>
<tr>
<td height="205">
<select name="myquanxian" size="15">
<option value="a">a</option>
</select>
</td>
<td><input type="submit" name="Submit" value="<<" onclick="doquanxian()">
<br><input type="submit" name="Submit2" value=">>" onclick="watch_del()">
</td>
<td>
<select name="allquanxian" size="15" ondblclick="doquanxian()">
<option value="shenqingren">申请人</option>
<option value="jingbanren">经办人</option>
<option value="fuzeren">负责人</option>
<option value="shenpiren">审批人</option>
</select>
</td>
</tr>
</table>
</body>
</html>
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