一、js：要点：
完整代码：

<script>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(){ console.log(xmlhttp.readyState) if(xmlhttp.readyState < 4){ console.log('loading...') }else if (xmlhttp.readyState == 4 && xmlhttp.status == 200){ xmlDoc=xmlhttp.responseText; console.log(xmlDoc) }else{ console.log('fail...') xmlhttp.abort() }}xmlhttp.open("POST",'test.php',true,'user','pwd');xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');xmlhttp.setRequestHeader('name', 'lee');xmlhttp.send(null);</script>二、php：要点：
完整代码：

<?phpheader('Access-Control-Allow-Origin:*');header('Access-Control-Allow-Credentials: true');header('Access-Control-Allow-Methods:GET,PUT,POST,DELETE,OPTIONS');header('Access-Control-Allow-Headers:WWW-Authenticate,Authorization,Set-Cookie,X-Requested-With, Accept, Accept-Version, Content-Length, Content-MD5, Content-Type, Date, X-Api-Version,name');$header = apache_request_headers();var_Dump($header['name']);exit;