<!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> <title> new document </title> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <style type="text/css"></style> <script type="text/javascript"> window.onload=function(){ //获取name=form1的元素对象 var theForm = document.form1; //给form对象添加属性 theForm.method ="post"; theForm.action ="login.php"; //theForm.entype="application/x-www-form-urlencoded"; //输出当前的编码方式 //window.alert(theForm.enctype); } </script> </head> <body> <form name="form1"> 用户名：<input type="text" name="username" /> 密码：<input type="password" name="userpwd" /> <input type="submit" value="提交表单" /> </form> </body> </html>