jQuery在html有效在jsp无效的原因及解决方法

2020-05-17 06:25:07易采站长站整理

最近用jQuery来写下拉框的选项值的左右移动,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>无标题文档</title>
<script type=”text/javascript” src=”../js/jquery-1.4.2.js”></script>
<script type=”text/javascript”>
$(function(){
$(“input”).hover(function(){
$(this).val(“”)
},
function(){
$(this).val(this.defaultValue)
}
)
})
jQuery(function(){
//左侧加到右侧
jQuery(“#add”).click(function(){$(“#select1 option:selected”).appendTo(“#select2”)})
//右侧加到左边
jQuery(“#remove”).click(function(){$(“#select2 option:selected”).appendTo(“#select1”)})
//全部加到右边
jQuery(“#add_all”).click(function(){$(“#select1 option”).appendTo(“#select2”)})
//全部移动左边
$(“#remove_all”).click(function(){$(“#select2 option”).appendTo(“#select1”)})
//双击加到右边
$(“#select1”).dblclick(function(){$(“option:selected”,this).appendTo(“#select2”)})
//双击移动左边
$(“#select2”).dblclick(function(){$(“option:selected”,this).appendTo(“#select1”)})
})
function len(){
var sel = document.getElementById(“select2”);
alert(sel.length);
}
</script>
<style type=”text/css”>
*{ margin:0; padding:0;}
input{ color:#ccc;}
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>
</head>
<body>
<input type=”text” value=”aaaaa” /><br />
<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>
<img id=”add” src=’../img/content/arrowRight_disabled.gif’ width=”24″ height=”24″ border=’0′ style=”cursor:pointer; vertical-align:middle;” />