如下所示: <!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN> <html> <head> <meta http-equiv=Content-Type content=text/html; charset=UTF-8> <title>在此处插入标题</title> [removed] //判断用户输入的电子邮箱格式是否正确 function checkEmail(){ var myforms=document.forms; var myemail=