window.onload = function () { var firstCb = document.getElementById("firstCb"); var cbs = document.getElementsByName("cb"); //全选 firstCb.onclick = function () { for (var i = 0; i <cbs.length ; i++) { cbs[i].checked = this.checked; } } document.getElementById("selectAll").onclick = function () { for (var i = 0; i <cbs.length ; i++) { cbs[i].checked = true; } } document.getElementById("unSelectAll").onclick = function () { for (var i = 0; i <cbs.length ; i++) { cbs[i].checked = false; } } document.getElementById("selectRev").onclick = function () { for (var i = 0; i <cbs.length ; i++) { if(cbs[i].checked){ cbs[i].checked = false; }else if(!cbs[i].checked){ cbs[i].checked = true; } } } }
<table>
<caption>学生信息表</caption>
<tr>
<th><input type="checkbox" name="cb" id="firstCb"></th>
<th>编号</th>
<th>姓名</th>
<th>性别</th>
<th>操作</th>
</tr>
<tr>
<td><input type="checkbox" name="cb" ></td>
<td>1</td>
<td>令狐冲</td>
<td>男</td>
<td><a href="javascript:void(0);">删除</a></td>
</tr>
<tr>
<td><input type="checkbox" name="cb" ></td>
<td>2</td>
<td>任我行</td>
<td>男</td>
<td><a href="javascript:void(0);">删除</a></td>
</tr>
<tr>
<td><input type="checkbox" name="cb" ></td>
<td>3</td>
<td>岳不群</td>
<td>?</td>
<td><a href="javascript:void(0);">删除</a></td>
</tr>
</table>
<div>
<input type="button" id="selectAll" value="全选">
<input type="button" id="unSelectAll" value="全不选">
<input type="button" id="selectRev" value="反选">
</div>
原文：https://www.cnblogs.com/gaoSJ/p/13693557.html