DropDownList怎么可以输入？

mbh0210 2006-08-25 11:46:09

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wxshzf 2006-11-22

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学习

wuyongbiao 2006-11-18

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学习

jxjjljf 2006-11-14

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ding

smile9961 2006-08-25

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http://www.codeproject.com/aspnet/comboboxcontrol.asp

antiking 2006-08-25

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只可惜全js的，收藏了！我自己用服务器控件写过．可输入，多列显示的控件．可惜存在刷新问题．GZ楼下有没有更好的．

leafsword_519 2006-08-25

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再转一个
function combox(_inpuObjName,_controlSelectName)
{
//生成的输入框对象名称
this.inpuObjName=_inpuObjName;
//生成的输入框对象
this.inputbox=null;
//原来的下拉框对象
this.controlSelect=document.getElementById(_controlSelectName);

//初始化对象
//_comboxObj:combox对象，须指向自己
this.init=function(_comboxObj)
{
this.inputbox=document.createElement("input");
this.inputbox.id=this.inpuObjName;
this.inputbox.comboxObj=_comboxObj;
this.inputbox.onchange=function()
{
this.comboxObj.find();
}
with(this.inputbox.style)
{
width=this.controlSelect.offsetWidth-16;
height=this.controlSelect.offsetHeight;
}
this.controlSelect.insertAdjacentElement("beforeBegin",this.inputbox);
_span=document.createElement("span");
_span.style.width=18;
this.controlSelect.insertAdjacentElement("beforeBegin",_span);
_span.appendChild(this.controlSelect);
_container=document.createElement("span");
this.inputbox.insertAdjacentElement("beforeBegin",_container);
_container.appendChild(this.inputbox);
_container.appendChild(_span);
_container.style.width=this.inputbox.offsetWidth+18;
_width=this.controlSelect.offsetWidth-18;
with (this.controlSelect.style)
{
margin="0 0 0 -"+_width;
}
this.controlSelect.comboxObj=_comboxObj;
this.controlSelect.onchange=function()
{
this.comboxObj.change();
}
this.change();
}
//当搜索到输入框的值时,下拉框自动定位/
this.find=function()
{
with (this.controlSelect)
{
for(i=0;i<options.length;i++)
if(options[i].text.indexOf(this.inputbox.value)==0)
{
selectedIndex=i;
this.change();
break;
}
}
}
//定义下拉框的onchange事件
this.change=function()
{
this.inputbox.value=this.controlSelect.options[this.controlSelect.selectedIndex].text;
with (this.inputbox)
{
select();
focus();
}
}
}
/**
* 定位函数，获取控件绝对坐标
*/
function getLeftPos(e)
{
var left=e.offsetLeft;
while (e=e.offsetParent)
{
left+=e.offsetLeft;
}
return left;
}
function getTopPos(e)
{
var top=e.offsetTop;
while (e=e.offsetParent)
{
top+=e.offsetTop;
}
return top;
}　　

　　附上测试页面test.htm：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script language="javascript" src="combox.js"></script>
</HEAD>
<BODY>
<table border="1" style="border-collapse:collapse ">
<tr>
<td width="300"><select name=test1>
<option value="可编辑下拉框1" selected>可编辑下拉框1</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
<INPUT TYPE="button" value="获取编辑框1的值" onclick="alert(document.getElementById('username').value)">
</td>
<td width="109"><select name=test2>
<option value="可编辑下拉框2">可编辑下拉框25555555</option>
<option value="1">4</option>
<option value="2" selected>5</option>
<option value="3">6</option>
</select>
</td>
<td width="343">
<INPUT TYPE="button" value="获取编辑框2的值" onclick="alert(document.getElementById('password').value)">
</td>
</tr>
</table>
<script language="javascript">
var a=new combox("username","test1");
//参数1为新生成输入框的名称
//参数2为原来的select对象名称
a.init(a);
var b=new combox("password","test2");
b.init(b);
</script>
</BODY>
</HTML>

leafsword_519 2006-08-25

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转别人写的：
<form>
<OBJECT classid=clsid:8BD21D30-EC42-11CE-9E0D-00AA006002F3 id=MdcCombo1 name=MdcCombo1 VIEWASTEXT>
<PARAM NAME="VariousPropertyBits" VALUE="746604571">
<PARAM NAME="BackColor" VALUE="2147483653">
<PARAM NAME="ForeColor" VALUE="2147483656">
<PARAM NAME="MaxLength" VALUE="0">
<PARAM NAME="BorderStyle" VALUE="0">
<PARAM NAME="ScrollBars" VALUE="0">
<PARAM NAME="DisplayStyle" VALUE="3">
<PARAM NAME="MousePointer" VALUE="0">
<PARAM NAME="Size" VALUE="2540;635">
<PARAM NAME="PasswordChar" VALUE="0">
<PARAM NAME="ListWidth" VALUE="0">
<PARAM NAME="BoundColumn" VALUE="1">
<PARAM NAME="TextColumn" VALUE="65535">
<PARAM NAME="ColumnCount" VALUE="1">
<PARAM NAME="ListRows" VALUE="8">
<PARAM NAME="cColumnInfo" VALUE="0">
<PARAM NAME="MatchEntry" VALUE="1">
<PARAM NAME="ListStyle" VALUE="0">
<PARAM NAME="ShowDropButtonWhen" VALUE="2">
<PARAM NAME="ShowListWhen" VALUE="1">
<PARAM NAME="DropButtonStyle" VALUE="1">
<PARAM NAME="MultiSelect" VALUE="0">
<PARAM NAME="Value" VALUE="">
<PARAM NAME="Caption" VALUE="">
<PARAM NAME="PicturePosition" VALUE="458753">
<PARAM NAME="BorderColor" VALUE="2147483654">
<PARAM NAME="SpecialEffect" VALUE="2">
<PARAM NAME="Accelerator" VALUE="0">
<PARAM NAME="GroupName" VALUE="">
<PARAM NAME="FontName" VALUE="Times New Roman">
<PARAM NAME="FontEffects" VALUE="1073741824">
<PARAM NAME="FontHeight" VALUE="240">
<PARAM NAME="FontOffset" VALUE="0">
<PARAM NAME="FontCharSet" VALUE="0">
<PARAM NAME="FontPitchAndFamily" VALUE="34">
<PARAM NAME="ParagraphAlign" VALUE="1">
<PARAM NAME="FontWeight" VALUE="400">
</OBJECT>
</form>
<script>
function loaditem(){
with(document.all.MdcCombo1){
AddItem("aaaaaa")
AddItem("bbbbbb")
AddItem("cccccc")
AddItem("dddddd")
AddItem("eeeeee")
AddItem("ffffff")
}
}
document.onload=loaditem
</script>

但是select元素配合css/javascript真的不可以达到这个效果吗？
答案是肯定的，至少也能模拟出类似效果
显然是可以把一个文本框独立层放在<select>之上，盖住<select>内容
然后在select元素的onchange中赋值给文本框,然后提交文本框内容……
呵呵，很简单呀——但是这样一做来看就傻眼了（具体你自个琢磨）
那么我们就要加上css这个强大工具：
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>

<body bgcolor="#FFFFFF" text="#000000">
<select name="select"style="position:absolute; left: 0px; top: 0px; width: 120px; height: 18px; clip: rect(0 120 18 100)" id="select" onchange="textfield.value=select.value;textfield.select()">
<option value="aaaaaaaa">aaaaaaaa</option>
<option value="bbbbbbbb">bbbbbbbb</option>
<option value="cccccccc">cccccccc</option>
</select>
<input type="text" style="position:absolute; left: 0px; top: 0px; width: 100px; height: 18px" name="textfield">
</body>
</html>