xmlhttprequest.js

一个jsp写的bbs

  var bAsync = ( typeof(asyncFunctionPointer) == 'function' ) ;
  var oXmlHttp = this.GetHttpRequest() ;
  oXmlHttp.open( "POST", urlToCall, bAsync ) ;
  if ( bAsync ) {
    oXmlHttp.onreadystatechange = function()
	{
	  if ( oXmlHttp.readyState == 4 ) {
	    if ( oXmlHttp.status == 200 ) {
		  asyncFunctionPointer( oXmlHttp.responseXML ) ;
		}
		else {
		  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
		}
	  }
	}
  }
  oXmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  oXmlHttp.send( data ) ;
  if ( ! bAsync ) {
    if ( oXmlHttp.status == 200 ) {
	  this.DOMDocument = oXmlHttp.responseXML ;
	}
	else {
	  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
	}
  }
}

//--BBSXml with Object
BBSXml.prototype.GetUrlTextInObj = function( urlToCall, asyncFunctionPointer )
{
  var oBBSXml = this ;
  //var bAsync = ( typeof(asyncFunctionPointer) == 'function' ) ;
  var bAsync = ( typeof(asyncFunctionPointer) == 'object' ) ;
  var oXmlHttp = this.GetHttpRequest() ;
  oXmlHttp.open( "GET", urlToCall, bAsync ) ;
  if ( bAsync ) {
    oXmlHttp.onreadystatechange = function()
	{
	  if ( oXmlHttp.readyState == 4 ) {
	    if ( oXmlHttp.status == 200 ) {
		  //asyncFunctionPointer( oXmlHttp.responseText ) ;
                  asyncFunctionPointer.execute( oXmlHttp.responseText ) ;
		}
		else {
		  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
		}
	  }
	}
  }
  oXmlHttp.send( null ) ;
  if ( ! bAsync ) {
    if ( oXmlHttp.status == 200 ) {
	  this.DOMDocument = oXmlHttp.responseXML ;
	}
	else {
	  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
	}
  }
}

BBSXml.prototype.PostUrlTextInObj = function( urlToCall, data, asyncFunctionPointer )
{
  var oBBSXml = this ;
  //var bAsync = ( typeof(asyncFunctionPointer) == 'function' ) ;
  var bAsync = ( typeof(asyncFunctionPointer) == 'object' ) ;
  var oXmlHttp = this.GetHttpRequest() ;
  oXmlHttp.open( "POST", urlToCall, bAsync ) ;
  if ( bAsync ) {
    oXmlHttp.onreadystatechange = function()
	{
	  if ( oXmlHttp.readyState == 4 ) {
	    if ( oXmlHttp.status == 200 ) {
		  //asyncFunctionPointer( oXmlHttp.responseText ) ;
                  asyncFunctionPointer.execute( oXmlHttp.responseText ) ;
		}
		else {
		  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
		}
	  }
	}
  }
  oXmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  oXmlHttp.send( data ) ;
  if ( ! bAsync ) {
    if ( oXmlHttp.status == 200 ) {
	  this.DOMDocument = oXmlHttp.responseXML ;
	}
	else {
	  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
	}
  }
}

BBSXml.prototype.GetUrlXmlInObj = function( urlToCall, asyncFunctionPointer )
{
  var oBBSXml = this ;
  //var bAsync = ( typeof(asyncFunctionPointer) == 'function' ) ;
  var bAsync = ( typeof(asyncFunctionPointer) == 'object' ) ;
  var oXmlHttp = this.GetHttpRequest() ;
  oXmlHttp.open( "GET", urlToCall, bAsync ) ;
  if ( bAsync ) {
    oXmlHttp.onreadystatechange = function()
    {
      if ( oXmlHttp.readyState == 4 ) {
        if ( oXmlHttp.status == 200 ) {
          //asyncFunctionPointer( oXmlHttp.responseXML ) ;
          asyncFunctionPointer.execute( oXmlHttp.responseXML ) ;
        }
        else {
          alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
        }
      }
    }
  }
  oXmlHttp.send( null ) ;

  if ( ! bAsync ) {
    if ( oXmlHttp.status == 200 ) {
	  this.DOMDocument = oXmlHttp.responseXML ;
	}
	else {
	  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
	}
  }
}

BBSXml.prototype.PostUrlXmlInObj = function( urlToCall, data, asyncFunctionPointer )
{
  var oBBSXml = this ;
  //var bAsync = ( typeof(asyncFunctionPointer) == 'function' ) ;
  var bAsync = ( typeof(asyncFunctionPointer) == 'object' ) ;
  var oXmlHttp = this.GetHttpRequest() ;
  oXmlHttp.open( "POST", urlToCall, bAsync ) ;
  if ( bAsync ) {
    oXmlHttp.onreadystatechange = function()
	{
	  if ( oXmlHttp.readyState == 4 ) {
	    if ( oXmlHttp.status == 200 ) {
                  asyncFunctionPointer.execute( oXmlHttp.responseXML ) ;
		}
		else {
		  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
		}
	  }
	}
  }
  oXmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  oXmlHttp.send( data ) ;
  if ( ! bAsync ) {
    if ( oXmlHttp.status == 200 ) {
	  this.DOMDocument = oXmlHttp.responseXML ;
	}
	else {
	  alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
	}
  }
}
//--
function changeStyle(elementID,toStyle) {
  document.getElementById(elementID).className=toStyle;
}

function getRadioValue(formName,radioName) {
  var radios = eval("document."+formName+"."+radioName);
  for (var i = 0; i < radios.length; i++) {
    if (radios[i].checked) {
      return radios[i].value;
    }
  }
}

function getRadioValueByName(radioName) {
   var radioValues = document.getElementsByName(radioName);
   for (var i = 0; i < radioValues.length; i++) {
    if (radioValues[i].checked) {
      return radioValues[i].value;
    }
  }
}

function getCheckBoxValue(checkBoxName) {
  var checkBox = document.getElementById(checkBoxName);
  if (checkBox.checked) {
    return checkBox.value;
  }
  return "";
}

function getCheckBoxSingleValue(checkBoxId) {
  var checkBoxs = document.getElementsByName(checkBoxId);
  for (var i = 0; i < checkBoxs.length; i++) {
    if (checkBoxs[i].checked) {
      return checkBoxs[i].value;
    }
  }
  return "";
}

var req;

function executeXhrOfPost(callback, url,data) {
  req = new XMLHttpRequest();
  if (req) {
    req.onreadystatechange = callback;
    req.open("POST", url, true);
    req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    req.send(data);
  }
}

function executeXhrOfGet(callback, url) {
  req = new XMLHttpRequest();
  if (req) {
    req.onreadystatechange = callback;
    req.open("GET", url, true);
    req.send();
  }
}

function getResponseXMLMsgs(responseXML) {
  return responseXML.getElementsByTagName("messages")[0];
}

function getResponseXMLMsgsCodeid(responseXML) {
  var messages = getResponseXMLMsgs(responseXML);
  //alert(messages);
  //alert(messages.childNodes[1].childNodes[0].nodeValue);
  //alert("messages.childNodes[0].childNodes[0]:"+messages.childNodes[0].childNodes[0]);
  var x = messages.childNodes;
  for (i = 0; i < x.length; i++) {
    if (x[i].nodeName == "codeid") {
      return x[i].childNodes[0].nodeValue;
    }
  }
  return "E000";
  //return messages.childNodes[0].childNodes[0].nodeValue;
}

function getResponseXMLMsgsMessage(responseXML) {
  var messages = getResponseXMLMsgs(responseXML);
  //alert(messages);
  var x = messages.childNodes;
  for (i = 0; i < x.length; i++) {
    if (x[i].nodeName == "message") {
      return x[i].childNodes[0].nodeValue;
    }
  }
  //return messages.childNodes[1].childNodes[0].nodeValue;
  return "Error";
}

function getResponseXMLMsgsText(responseXML) {
  var messages = getResponseXMLMsgs(responseXML);
  //alert(messages);
  var x = messages.childNodes;
  for (i = 0; i < x.length; i++) {
    if (x[i].nodeName == "text") {
      return x[i].childNodes[0].nodeValue;
    }
  }
  //return messages.childNodes[2].childNodes[0].nodeValue;
  return "";
}

function hiddenElement(elementName) {
  document.getElementById(elementName).style.display = "none";
}

function displayElement(elementName) {
  document.getElementById(elementName).style.display = "block";
}

function filterString(txt) {
  var re = /\+/;
  return txt.replace(re,"%2B");
}

function getElementValue(elementName) {
  return $(elementName).value;
}

function getElementFilterValue(elementName) {
  return filterString($(elementName).value);
}

function handleEnter(field, event) {
  var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
  if (keyCode == 13) {
    return false;
  }
  return true;
}

function startsWith(txt,tar) {
  if (txt.indexOf(tar) == 0) {
    return true;
  }
  else {
    return false;
  }
}

function endsWith(txt,tar) {
  var num = txt.lastIndexOf(tar);
  if ((num != -1) && (tar == txt.substring(num,txt.length))) {
    return true;
  }
  else {
    return false;
  }
}

function getActionMappingName(action) {
  var value = action;
  var question = action.indexOf("?");
  if (question >= 0) {
    value = value.substring(0, question);
  }

  var slash = value.lastIndexOf("/");
  var period = value.lastIndexOf(".");
  if ((period >= 0) && (period > slash)) {
    value = value.substring(0, period);
  }

  return startsWith(value,"/") ? value : ("/" + value);
}

function getActionMappingURL(action) {
  var value = contextPath;
  var servletMapping = servletMappingStr;
  var queryString;
  var question = action.indexOf("?");
  if (question >= 0) {
    queryString = action.substring(question);
  }

  var actionMapping = getActionMappingName(action);
  if (startsWith(servletMapping,"*.")) {
    value += actionMapping;
    value += servletMapping.substring(1);
  }
  else if (endsWith(servletMapping,"/*")) {
    value += servletMapping.substring(0, servletMapping.length - 2);
    value += actionMapping;
  }
  else if (servletMapping == "/") {
    value += actionMapping;
  }
  if (queryString != undefined) {
    value += queryString;
  }
  return value;
}

function getExtName(fileName){
    if(fileName.lastIndexOf(".")<0) return "";
    return fileName.substring(fileName.lastIndexOf(".")+1,fileName.length).toLowerCase();
}
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