var url = "../ipsearch.php";//要发送到的url
//alert(document.getelementbyid("depcode").value);
//alert(document.getelementbyid("querytype").value);
var querystring ="deptcode"+ "=" +deptcode;
querystring+= "&querytype" + "=" + querytype;//如果有多个参数需要传递,则用&符号连接
xmlhttp.open("post", url, true);
xmlHttp.onreadystatechange = showIPSearchResult;
xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");
xmlHttp.send(queryString);
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