【下载文档:  ajax的定时调用每5秒调用一次.txt 】

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ajax的定时调用每5秒调用一次
复制代码 代码如下: function initXMLRequest(){ if (window.ActiveXObject) { xmlRequest = new ActiveXObject("Microsoft.XMLHTTP"); } else { if (window.XMLHttpRequest) { xmlRequest = new XMLHttpRequest(); } } } function sendHTTPRequest(){ initXMLRequest(); var url = "monitor!taskdata.action"; //调用的servlet if (xmlRequest) { xmlRequest.open("POST", url, true); xmlRequest.send(null); xmlRequest.onreadystatechange = isDataExists; //使用方法回调，每5秒调用一次 setTimeout("sendHTTPRequest()",5000); } } function isDataExists(){ if (xmlRequest.readyState == 4) { if (xmlRequest.status == 200) { var data = eval("("+xmlRequest.responseText+")"); // 获取tbody的表格内容 var taskTable = document.getElementById("tasktbody"); for(var i=taskTable.childNodes.length-1;i>=0;i--){ taskTable.removeChild(taskTable.childNodes[i]); } $.each(data, function(i,val){ var newTR = taskTable.insertRow(taskTable.rows.length); newTR.id="taskdata_"+(i+1); newTR.ondblclick=getdetail; newTR.onclick=selectRow; backColor(val.taskstatus,newTR); var newNameTD=newTR.insertCell(0); newNameTD.innerHTML = val.taskname; newNameTD.id="taskname_"+(i+1); var newStatusTD=newTR.insertCell(1); newStatusTD.innerHTML = val.taskstatus; newStatusTD.id="taskstatus_"+(i+1); var newArgTD=newTR.insertCell(2); newArgTD.innerHTML = val.data_start_time; var newOtherArgTD=newTR.insertCell(3); newOtherArgTD.innerHTML = val.schedule_interval; var newdateformatTD=newTR.insertCell(4); newdateformatTD.innerHTML = val.next_execution_time; var newbackwordTD=newTR.insertCell(5); newbackwordTD.innerHTML = val.taskdetailscount; var newpriorityTD=newTR.insertCell(6); newpriorityTD.innerHTML = val.statusruncount; var newleftTD=newTR.insertCell(7); newleftTD.innerHTML = val.statusfinishcount; var newlefttimeTD=newTR.insertCell(8); newlefttimeTD.innerHTML = val.statuserrorcount; }); } } }