DropDownList既能選擇又能輸入

最後更新：2018-12-04 來源：互聯網

上載者：User

創建阿里雲帳戶，並獲得超過 40 款產品的免費試用版；而企業帳戶則可以享有總值 $1200 的免費試用版。立即註冊！

<html>
<head>
<style>

</style>
</head>
<script>
<!--
function addOption(pos){

if(event.keyCode==13)
{
  var select_obj = document.getElementById("myselect");
  var text_value   = document.getElementById("test").value;

  if (select_obj.length)
  {
   for (var i=0;i<select_obj.length;i++)
   {
    // 如果已經存在，不添加，直接退出
    if (select_obj.options[i].text==text_value)
     alert("選項已存在，請重新輸入");

return;

   }
  }
  var the_option= new Option(text_value,text_value);

  select_obj.add(the_option);

  select_obj.selectedIndex = select_obj.options.length-1
}

}
//-->
</script>
<div class="cls1" style="clip: rect(3 280 21 110)">
  <select name="myselect" style="width:127" onchange="document.getElementById('test').value=this.value">
<option value=1>1</option>
<option value=2>2</option>
<option value=3>3</option>
  </select>
</div>
<div class="cls2">
<input type="text" name="test" onkeydown="addOption()" size="20" style="width: 127; height: 23">
</div>

</body>
</html>

原貼地址：http://singlepine.cnblogs.com/articles/255144.html

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

Sales Support

1 on 1 presale consultation

Chat Contact Sales
After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

Open a Ticket
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

Learn More

DropDownList既能選擇又能輸入

聯繫我們

A Free Trial That Lets You Build Big!

Sales Support

After-Sales Support