下拉框
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？ 参见代码
http://dhtmlx.com/docs/products/dhtmlxCombo/
用户自己输入？
HTML5有这种控件，但是如果你用HTML4的话可以看一下我的博客
http://blog.csdn.net/xiaowanzi80hou/article/details/11020005
百度一下 带输入框的下拉框。很多
有个插件的好像是叫COMBOX
<!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>
