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<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>复选框的全选反选全不选</title> <style> body{ margin:200px;} </style> <script language="javascript" type="text/javascript" src="../script/jquery-1.4.2.min.js"></script> <script> $(function(){ $("input[value='全选']").click(function(){ $("input[type=checkbox]").attr("checked",true); }) $("input[value='全不选']").click(function(){ $("input[type=checkbox]").attr("checked",false); }) $("input[value='反选']").click(function(){ $("input[type=checkbox]").each(function(){ $(this).attr("checked",!$(this).attr("checked")); }) }) }) </script> </head> <body> <div id="div"> <input type="checkbox" />苹果 <input type="checkbox" />香蕉 <input type="checkbox" />菠萝 <input type="checkbox" />草莓 <input type="checkbox" />梨子<br /> <input type="button" value="全选" /><input type="button" value="反选" /><input type="button" value="全不选" /> </div> </body> </html>