可以输入的Select下拉框
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>可以输入的select标签</title> </head><body><select id="select" onkeydown="Select.del(this,event)" onkeypress="Select.write(this,event)"> <option value=""></option> <option value="11">11</option> <option value="22">22</option> <option value="33">33</option> </select> <input type="button" value="点我" id="test" onclick="test();"/> <script> var Select = { del : function(obj,e){ if((e.keyCode||e.which||e.charCode) == 8){ var opt = obj.options[0]; opt.text = opt.value = opt.value.substring(0, opt.value.length>0?opt.value.length-1:0); } }, write : function(obj,e){ if((e.keyCode||e.which||e.charCode) == 8)return ; var opt = obj.options[0]; opt.selected = "selected"; opt.text = opt.value += String.fromCharCode(e.charCode||e.which||e.keyCode); } } function test(){ alert(document.getElementById("select").value); } </script> </body></html>?