select 下拉框如何可以选择option里面的值，也可以用户自己输入啊？

foryou2016 2013-11-20 10:22:31

select 下拉框如何可以选择option里面的值，也可以用户自己输入啊？
高手粘贴下代码，谢谢

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Deep_Learning 2013-11-22

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<!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>输入框的下拉提示</title>
<style type="text/css">
<!--
body{background:#fff}
.Menu {
position:relative;
width:204px;
height:127px;
z-index:1;
background: #FFF;
border:1px solid #000;
margin-top:-100px;
display:none;
}
.Menu2 {
position: absolute;
left:0;
top:0;
width:100%;
height:auto;
overflow:hidden;
z-index:1;
}
.Menu2 ul{margin:0;padding:0}
.Menu2 ul li{width:100%;height:25px;line-height:25px;text-indent:15px;
border-bottom:1px dashed #ccc;color:#666;cursor:pointer;
change:expression(
this.onmouseover=function(){
this.style.background="#F2F5EF";
},
this.onmouseout=function(){
this.style.background="";
}
)
}
input{width:200px}
.form{width:200px;height:auto;}
.form div{position:relative;top:0;left:0;margin-bottom:5px}
#List1,#List2,#List3{left:0px;top:93px;}
-->
</style>
<script type="text/javascript">
function showAndHide(obj,types){
var Layer=window.document.getElementById(obj);
switch(types){
case "show":
Layer.style.display="block";
break;
case "hide":
Layer.style.display="none";
break;
}
}
function getValue(obj,str){
var input=window.document.getElementById(obj);
input.value=str;
}
</script>
</head>
<body>
<div class="form">
<div> Location：<input type="text" id="txt" name="txt" onfocus="showAndHide('List1','show');" onblur="showAndHide('List1','hide');"></div>
<!--列表1-->
<div class="Menu" id="List1">
<div class="Menu2">
<ul>
<li onmousedown="getValue('txt','中国CHINA');showAndHide('List1','hide');">中国CHINA</li>
<li onmousedown="getValue('txt','美国USA');showAndHide('List1','hide');">美国USA</li>
</ul>
</div>
</div>
<div> Sex：<input type="text" id="txt2" name="txt2" onfocus="showAndHide('List2','show');" onblur="showAndHide('List2','hide');"></div>
<!--列表2-->
<div class="Menu" id="List2">
<div class="Menu2">
<ul>
<li onmousedown="getValue('txt2','男Male');showAndHide('List2','hide');">男Male</li>
<li onmousedown="getValue('txt2','女Female');showAndHide('List2','hide');">女Female</li>
</ul>
</div>
</div>
<div> education：<input type="text" id="txt3" name="txt3" onfocus="showAndHide('List3','show');" onblur="showAndHide('List3','hide');"></div>
<!--列表3-->
<div class="Menu" id="List3">
<div class="Menu2">
<ul>
<li onmousedown="getValue('txt3',this.innerText);showAndHide('List3','hide');">大专</li>
<li onmousedown="getValue('txt3','本科');showAndHide('List3','hide');">本科</li>
<li onmousedown="getValue('txt3','硕士');showAndHide('List3','hide');">硕士</li>
<li onmousedown="getValue('txt3','本科');showAndHide('List3','hide');">本科</li>
</ul>
</div>
</div>
</div><br/>
</body>
</html>
<p align="center"></p>