html页面代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
* { margin:0; padding:0; }
div.centent {
float:left;
text-align: center;
margin: 10px;
}
span {
display:block;
margin:2px 2px;
padding:4px 10px;
background:#898989;
cursor:pointer;
font-size:12px;
color:white;
}
</style>
<!-- 引入jQuery -->
<script src="../jquery/jquery-1.3.1.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
//移到右边
$(‘#add‘).click(function() {
//获取选中的选项，删除并追加给对方
$(‘#select1 option:selected‘).appendTo(‘#select2‘);
});
//移到左边
$(‘#remove‘).click(function() {
$(‘#select2 option:selected‘).appendTo(‘#select1‘);
});
//全部移到右边
$(‘#add_all‘).click(function() {
//获取全部的选项,删除并追加给对方
$(‘#select1 option‘).appendTo(‘#select2‘);
});
//全部移到左边
$(‘#remove_all‘).click(function() {
$(‘#select2 option‘).appendTo(‘#select1‘);
});
//双击选项
$(‘#select1‘).dblclick(function(){ //绑定双击事件
//获取全部的选项,删除并追加给对方
$("option:selected",this).appendTo(‘#select2‘); //追加给对方
});
//双击选项
$(‘#select2‘).dblclick(function(){
$("option:selected",this).appendTo(‘#select1‘);
});
});
</script>
</head>
<body>
<div class="centent">
<select multiple="multiple" id="select1" style="width:100px;height:160px;">
<option value="1">选项1</option>
<option value="2">选项2</option>
<option value="3">选项3</option>
<option value="4">选项4</option>
<option value="5">选项5</option>
<option value="6">选项6</option>
<option value="7">选项7</option>
</select>
<div>
<span id="add" >选中添加到右边>></span>
<span id="add_all" >全部添加到右边>></span>
</div>
</div>
<div class="centent">
<select multiple="multiple" id="select2" style="width: 100px;height:160px;">
<option value="8">选项8</option>
</select>
<div>
<span id="remove"><<选中删除到左边</span>
<span id="remove_all"><<全部删除到左边</span>
</div>
</div>
</body>
</html>
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让指定option值的选项被选中：
<select id="userTypeSub" name="userTypeSub">
<option value="">全部</option>
<option value="0">接入号登录</option>
<option value="1">宽带号登录</option>
</select>
$("#userTypeSub").val("1");
或者
$(‘select[name="userTypeSub"] option[value="1"]‘).attr("selected", "true");
上述代码表示让 宽带号登录 被选中。
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<script type="text/javascript">
var j$ = jQuery.noConflict();
</script>
j$(document).ready(
function(){
var date = new Date();
var preMonth = date.getMonth();
//让一个月被选中
j$("select[name=‘month‘] option[value=‘"+preMonth+"‘]").attr("selected",
"true");
}
);
<select name="month">
<option value="1">一月</option>
<option value="2">二月</option>
<option value="3">三月</option>
</select>
JQuery操作select中的option