| json cmd over http |
<html>
<meta charset="utf-8" />
<head>
<title>Call webservice via ajax</title>
<script>
var xhr = new XMLHttpRequest();
function sendMsg()
var name = document.getElementById(‘name‘).value;
//服务的地址
var wsUrl = ‘http://192.168.0.24:4888‘;
//请求体
var param = ‘"command":"API_start","ver":"1.1"‘;
//打开连接
xhr.open(‘POST‘, wsUrl, true);
//重新设置请求头
xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
//xhr.setRequestHeader("SOAPAction", "http://WebXml.com.cn/getRegionCountry");
//设置回调函数
xhr.onreadystatechange = _back;
//发送请求
xhr.send(param);
function _back()
if (xhr.readyState == 4)
if (xhr.status == 200)
document.getElementById(‘showInfo‘).innerHTML = xhr.responseText;
function sendMsg2()
</script>
</head>
<body>
<input type="button" value="send command" onclick="sendMsg();">
<input type="text" id="name"><br />
<div id="showInfo">
</div>
</body>
</html>
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