1.ajax  网页访问

2.form 表单

用户名<input class="yonghu" type="text" id="user" name="u">

密   码<input class="password"  id="pass" name="p">

<form action="login.php" method="POST" id="myform

">

function test(){

　　var myform = document.getElementById("myform");

　　var pass=  document.getElementById("pass");

　　pass.value = pass.value+"123";

　　myform.submit();

}//页面会有跳转  form 提交的是NAME值  搜 name submit getElementById

3.脚本标签

var s = document.createElement("script");

s.src="http://localhost/login.php?user=123&pass=456";

$("head").append(s)

Callback