①Default.aspx文件
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!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 id="Head1" runat="server"> <title></title> <script type="text/javascript" language="javascript"> function checkAll() { var a = document.getElementsByName("ck"); for (var i = 0; i < a.length; i++) { var c = a[i]; c.checked = true; } } function checkNOAll() { var a = document.getElementsByName("ck"); for (var i = 0; i < a.length; i++) { a[i].checked = false; } } function checkReverse() { var a = document.getElementsByName("ck"); for (var i = 0; i < a.length; i++) { var c = a[i]; if (c.checked == true) { c.checked = false; } else { c.checked = true; } } } </script> </head> <body> <form id="form1" runat="server"> <div> <input id="Checkbox1" type="checkbox" name="ck"/>路飞 <input id="Checkbox2" type="checkbox" name="ck"/>索隆 <input id="Checkbox3" type="checkbox" name="ck"/>山治 <input id="Checkbox4" type="checkbox" name="ck"/>萨博<br /> <input id="Button1" type="button" value="全选" οnclick="checkAll()" /> <input id="Button2" type="button" value="全不选" οnclick="checkNOAll()"/> <input id="Button3" type="button" value="反选" οnclick="checkReverse()"/> </div> </form> </body> </html>
②效果图
Ⅰ.全选
Ⅱ.全不选
Ⅲ.反选
③说明:
Ⅰ.选中“路飞”“索隆”点击全选则全部选中。
Ⅱ.选中“路飞”“索隆”“萨博”点击全不选则全部取消选中。
Ⅲ.选中“山治”“萨博”点击反选则选择其他两个选项(“路飞”“索隆”)。