javascript：

<script>function loadDoc(file,async=true){if(window.XMLHttpRequest){ // code for IE7+, Firefox, Chrome, Opera, Safarixmlhttp=new XMLHttpRequest();}else{ // code for IE6, IE5xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}if(async === true){xmlhttp.onreadystatechange = function(){ if(xmlhttp.readyState < 4){ // 加载中 }else if (xmlhttp.readyState == 4 && xmlhttp.status == 200){ // 成功 xmlDoc=xmlhttp.responseText; return xmlDoc }else{ // 失败 xmlhttp.abort() return }}}xmlhttp.open("POST",file,async);xmlhttp.setRequestHeader("Content-type", "application/json");var data = {name:'lee'}var json = JSON.stringify(data)xmlhttp.send(json);if(async === false){xmlDoc=xmlhttp.responseText;return xmlDoc}}var data = loadDoc('http://localhost/test.php',false)console.log(data)</script>php：

<?phpheader('access-control-allow-origin:*');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');$json = file_get_contents('php://input');echo $json;结果：