一、直接上代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>index</title>
</head>
<body>
<div>
<select id="leftSelector" multiple="multiple" name="SmsListOnLeft" style="height:100px; width:50px">
<option value="0">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select>
<span style="top: 30px; position: fixed;">
<input type="button" value="<<" id="btnLeft" />
<input type="button" value="" id="btnRight" />
</span>
<select id="rightSelector" multiple="multiple" name="SmsListOnRight" style="height:100px; width:50px; margin-left:80px">
<option value="6">A</option>
<option value="7">B</option>
<option value="8">C</option>
<option value="9">D</option>
<option value="10">E</option>
</select>
</div>
<br>
<input type="button" onclick="selectAll()" id="btnSelectAll" value="selectAll" />
<script src="/UploadFiles/2021-04-02/jquery-2.1.4.js">
二、效果图
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