<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>全选 </title> </head> <body> <script> document.write("<ul>"); for(var i=0;i<10;i++){ document.write("<li>"); document.write('<input type="checkbox" name="ids[]" value="'+i+'">aaaaa'); document.write("</li>") } document.write("</ul>") </script> <label for="aa"> <input type="checkbox" onClick="sall(this)"></label> 全选 </label> <script> var names=document.getElementsByName("ids[]"); function sall(obj){ for(var i=0;i<names.length;i++){ names[i].checked=obj.checked; } } </script> </body> </html>