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ecshop模板中如何实现局部刷新

2012-08-11 22:23 232 查看
建立一个ajax.js文件,代码如下:

// JavaScript Document

var xmlHttp;

function S_xmlhttprequest()

{

xmlHttp=null;

if (window.XMLHttpRequest)

{// code for IE7, Firefox, Opera, etc.

xmlHttp=new XMLHttpRequest();

}

else if (window.ActiveXObject)

{// code for IE6, IE5

xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");

}

}

function getName(name)

{

if(name = document.myform.name.value)

{

S_xmlhttprequest();

xmlHttp.open("get","date.php?name="+name,true);

xmlHttp.onreadystatechange = byname;

xmlHttp.send(null);

}

}

function byname()

{

if(xmlHttp.readyState ==1)

{

document.getElementById('name').innerHTML = "<font color=red>loading....</font>";

}

if(xmlHttp.readyState == 4)

{

if(xmlHttp.status == 200)

{

var name = xmlHttp.responseText;

document.getElementById('name').innerHTML = name;

}

}

}

function getEmail(email)

{

var email = document.myform.email.value;

if(email =="")

{

alert("用户名不能为空");

document.myform.email.focus();

return false;

}

else

{

S_xmlhttprequest();

xmlHttp.open("get","date.php?email="+email,true);

xmlHttp.onreadystatechange = byemail;

xmlHttp.send(null);

}

}

function byemail()

{

if(xmlHttp.readyState ==1)

{

document.getElementById('email').innerHTML = "<font color=red>loading....</font>";

}

if(xmlHttp.readyState == 4)

{

if(xmlHttp.status == 200)

{

var email = xmlHttp.responseText;

document.getElementById('email').innerHTML = email;

}

}

}

建立一个register.php文件,代码如下:

<title>注册页面</title>

<script src="Ajax.js" language="javascript">

</script>

<body>

<form action="" method="post" name="myform">

<table align="center">

<tr><td>用户名:</td><td><input type="text" name="name" value="" onblur="getName('name')"/></td><td><div id="name"><font color="#CC66CC">*用户名必填*</font></div></td></tr>

<tr><td>邮箱:</td><td><input type="text" name="email" value="" onblur="getEmail('email')"/></td><td><div id="email"><font color="#CC66CC">*邮箱必填*</font></div></td></tr>

</table>

</form>

建立一个date.php页面,用于查询数据库 :

<?

sleep(1);

$connt = mysql_connect("localhost","root","123456");

mysql_select_db('test',$connt );

mysql_query("set names 'gb2312'");

if($_GET['name'])

{

$name = $_GET['name'];

$sql = "select * from test where name='$name'";

$restul = mysql_query($sql);

$array = mysql_fetch_row($restul);

// print_r($array);

if(is_array($array))

{

echo "<font color='red'>该用户名已经存在</font>";

}

else

{

echo "<font color='red'>该用户名可以用</font>";

}

}

if($_GET['email'])

{

$name = $_GET['email'];

$sql = "select * from test where email='$email'";

$restul = mysql_query($sql);

$array = mysql_fetch_row($restul);

// print_r($array);

if(is_array($array))

{

echo "<font color='red'>该邮箱已存在</font>";

}

else

{

echo "<font color='red'>该邮箱可以用</font>";

}

}

?>
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