jQuery realizes the left and right movement of the drop-down box (move all, move the selected ones)

jQuery realizes the left and right movement of the drop-down box (move all, move the selected ones)_jquery

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Release： 2016-05-16 15:05:25

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The method used is: appendTo()
Format: $(content).appendTo(selector)
The appendTo() method inserts the specified content at the end (still inside) of the selected element.
The click() method triggers a click event, or specifies a function to run when a click event occurs.

Look at the specific implementation code:

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title></title>
  <script src="js/jquery-1.6.1.min.js" type="text/javascript"></script>
  <script type="text/javascript">
    $(function () {
      $("#add").click(function () {
      //1,方式一
//        var $option = $("#select1 option:selected");  //获取选中的选项
//        var $remove = $option.remove(); //删除下拉列表中选中的选项
//        $remove.appendTo("#select2");  //追加给对方
        //2，方式二
        var $option = $("#select1 option:selected");  //获取选中的选项
        $option.appendTo("#select2");  //追加给对方
      });
      $("#add_all").click(function () {
        var $option = $("#select1 option");
        $option.appendTo("#select2");
      });
      $("#remove").click(function () {
        var $option = $("#select2 option:selected");
        $option.appendTo("#select1");
      });
      $("#remove_all").click(function () {
        var $option = $("#select2 option");
        $option.appendTo("#select1");
      });
    });
  </script>
</head>
<body>
<h3>下拉框应用</h3>
  <table>
    <tr>
      <td>
        <select id="select1" multiple="multiple" style="width:100px;">
          <option value="News">News</option>
          <option value="Sport">Sport</option>
          <option value="Education">Education</option>
          <option value="Technology">Technology</option>
          <option value="Art">Art</option>
        </select>
      </td>
      <td>
        <button id="add">
          >|</button><br />
        <button id="add_all">
          >></button><br />
        <button id="remove_all">
          <<</button><br />
        <button id="remove">
          |<</button>
      </td>
      <td>
        <select id="select2" multiple="multiple" style="width:100px;">
        </select>
      </td>
    </tr>
  </table>
</body>
</html>

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jQuery realizes the left and right movement of the drop-down box (move all, move the selected ones)_jquery