本文實例講述了JS實現單擊輸入框彈出選擇框效果的方法。分享給大家供大家參考，具體如下：
運行效果截圖如下：
完整實例代碼如下：
<!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><title>實用的單擊輸入框彈出選擇框效果</title><meta http-equiv="content-type" content="text/html;charset=gb2312"><!--把下面代碼加到<head>與</head>之間--><style type="text/css">.black_overlay{display:none;position:absolute;top:0%;left:0%;width:100%;height:100%;background-color:#FFFFFF;z-index:1001;-moz-opacity:0.8;opacity:.80;filter:alpha(opacity=80);}.white_content{display:none;position:absolute;top:25%;left:25%;width:50%;height:50%;padding:16px;border:16px solid orange;margin:-32px;background-color:white;z-index:1002;overflow:auto;}</style><script language="javascript" type="text/javascript">function moveselect(obj,target,all){ if (!all) all=0 if (obj!="[object]") obj=eval("document.all."+obj) target=eval("document.all."+target) if (all==0) { while (obj.selectedIndex>-1){ //alert(obj.selectedIndex) mot=obj.options[obj.selectedIndex].text mov=obj.options[obj.selectedIndex].value obj.remove(obj.selectedIndex) var newoption=document.createElement("OPTION"); newoption.text=mot newoption.value=mov target.add(newoption) } } else { //alert(obj.options.length) for (i=0;i<obj.length;i++) { mot=obj.options[i].text mov=obj.options[i].value var newoption=document.createElement("OPTION"); newoption.text=mot newoption.value=mov target.add(newoption) }obj.options.length=0 }}function dakai(){document.getElementById('light').style.display='block';document.getElementById('fade').style.display='block'}function guanbi(){//下面上把右邊select的值傳到文本框內var yuanGong=document.getElementById("yuanGong")var yuanGongname=document.getElementById("yuanGongname");yuanGongname.value="";yuanGong.value=""http://如果不加這句，則每次選擇的結果追加var huoQu=document.getElementById("D2")for(var k=0;k<huoQu.length;k++){yuanGong.value=yuanGong.value + huoQu.options[k].value + " "http://這里的" "中間為空格，為字符間的分隔符，可以改成別的if (yuanGongname.value==""){yuanGongname.value=yuanGongname.value+ huoQu.options[k].text; //這里的" "中間為空格，為字符間的分隔符，可以改成別的}else{yuanGongname.value=yuanGongname.value+","+ huoQu.options[k].text; //這里的" "中間為空格，為字符間的分隔符，可以改成別的}}document.getElementById('light').style.display='none';document.getElementById('fade').style.display='none'}</script></head><body><!--把下面代碼加到<body>與</body>之間--><input type="text" id="yuanGong" onclick="dakai()" size="50"><input type="text" id="yuanGongname" size="50"><div id="light" class="white_content"><table border="1" width="350" id="table4" bordercolor="#CCCCCC" bordercolordark="#CCCCCC" bordercolorlight="#FFFFFF" cellpadding="3" cellspacing="0"> <tr> <td width="150" height="200" align="center" valign="middle"> 該部門員工 <select size="12" name="D1" ondblclick="moveselect(this,'D2')" multiple="multiple" style="width:140px"> <option value="1">員工1</option> <option value="2">員工2</option> <option value="3">員工3</option> </select> </td> <td width="50" height="200" align="center" valign="middle"> <input type="button" value="<<" name="B3" onclick="moveselect('D2','D1',1)"><br> <input type="button" value="<" name="B5" onclick="moveselect('D2','D1')"><br> <input type="button" value=">" name="B6" onclick="moveselect('D1','D2')"><br> <input type="button" value=">>" name="B4" onclick="moveselect('D1','D2',1)"><br> </td> <td width="150" height="200" align="center" valign="middle"> 未劃分部門員工 <select size="12" name="D2" id="D2" ondblclick="moveselect(this,'D1')" multiple="multiple" style="width:140px"> <option value="4">員工4</option> <option value="5">員工5</option> </select> </td> </tr></table><a href="javascript:void(0)" onclick="guanbi()">確定</a><input type="button" name="button" onclick="guanbi()" value="也可以使用按鈕來確定"></div><div id="fade" class="black_overlay"></div></body></html></body></html>希望本文所述對大家JavaScript程序設計有所幫助。
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