php ajax
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><!-- 以下是教你怎么结合php,xmlHttp和JS来传值以达到在同一个页面里操作数据的： -->
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script>
function getXmlHttpObject()
{
var xmlHttp=null;
//以下是四大浏览器
try{
// Firefox, Opera 8.0+, Safari
xmlHttp = new XMLHttpRequest();
}catch(e){
//Internet Explorer
try{
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
}catch(e){
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
}
return xmlHttp;
}
function clickbutton()
{
//根据ID获取一个input里面的值
var str = document.getElementById('txt').value;
//location.href = "php.php?txt="+test.value;
//取得一个XmlHttp对象
xmlHttp = getXmlHttpObject();
var url="php.php";
var poststr="q="+str;
//poststr=poststr+"&sid="+Math.random();
//用xmlHttp里的onreadystatechange方法得到准备好的状态
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("POST",url,true);
xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xmlHttp.send(poststr);
}
function stateChanged()
{
if(xmlHttp.readyState==4)
{
var res = xmlHttp.responseText;
alert(res);
//document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
}
}
</script>
</head>
<body>
<input type="text" name="txt" id="txt" />
<a href="">test</a>
<pstyle="cursor:">jlfds</p>
<input type="button" name="txt" id="button" value="button"/>
</body>
</html>
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