php ajax學習

var table = document.getElementById("tableadd");//table的用法for(var i = 1;i <= table.rows.length;i++)var tr = table.rows[i];function trimStr(str){return str.replace(/(^\s*)|(\s*$)/g,"");}explode(",",$_POST['name']);分割字串第一參數為分割標誌file_get_contents("php://input");  可以擷取post方法傳送的原始文本傳遞長文本就不用擔心了//post方法上傳資訊//擷取http對象

function GetXmlHttpObject(){var xmlHttp=null;try{// Firefox, Opera 8.0+, SafarixmlHttp=new XMLHttpRequest();}catch (e){//Internet Explorertry{xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); }catch (e){xmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); }}return xmlHttp;}//查看http請求是否成功function checkhttp(){var http=GetXmlHttpObject()if (http==null){error();return null;}return http;}

function getcontent(){gethttp = checkhttp();if(gethttp == null) return 0;var url;gethttp.onreadystatechange=getover;gethttp.open("POST",url,true);gethttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); gethttp.send(null);}function getover(){if (gethttp.readyState==4 || gethttp.readyState=="complete") { document.getElementById("Introduce").innerHTML = gethttp.responseText;  } }