采纳哦
JS获得的值 var name=document.getElenmentById("username").value
用url 提交到后台 脚本 winodw.open('addname.php?username='+name)
后台获取前台提交的数据后用mysql命令写入数据库
<?php$username= $_GET['username']
$link=mysql_connect('127.0.0.1','root','******') or die("connection error".mysql_error())
$flag=mysql_select_db("testdb",$link)
mysql_query("set names "."utf8")
mysql_query('insert into user ( username) value ('.$username.')')
?>
<html><head>
<script type="text/javascript">
function loadXMLDoc()
{
var xmlhttp
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest()
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 &&xmlhttp.status==200)
{
document.getElementById("myDiv").innerHTML=xmlhttp.responseText
}
}
xmlhttp.open("GET","/ajax/demo_get.asp",true)
xmlhttp.send()
}
</script>
</head>
<body>
<h2>AJAX</h2>
<button type="button" onclick="loadXMLDoc()">请求数据</button>
<div id="myDiv"></div>
</body>
</html>
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