js 解析xml

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当从Action中返回到页面上的是xml文件时，需要我们对xml文件进行操作：

假如xml是：<root>  <cunFleet>    <cunFleetID>2</cunFleetID>    <cunfleetName>elite002</cunfleetName>  </cunFleet></root>
页面中获得此xml后的操作:
function toXML(strxml){ try{ xmlDoc = new ActiveXObject("Microsoft.XMLDOM"); xmlDoc.loadXML(strxml); } catch(e){ //如果不是IE的话使用这种方式获得var oParser=new DOMParser(); xmlDoc=oParser.parseFromString(strxml,"text/xml"); } return xmlDoc; } function displaySelect(ajax){var xmlobj = toXML(ajax);var cunfName = xmlobj.getElementsByTagName('cunFleet/cunfleetName')[0].childNodes(0).nodeValue;//通过xml中接点关系来找需要的值var cunFid = xmlobj.getElementsByTagName('cunFleet/cunFleetID')[0].childNodes(0).nodeValue;var truckListSelect = document.getElementById('currentTruckList');var usedTrListSelect = document.getElementById('availableTruckList');var ftruckLength = xmlobj.getElementsByTagName('fleetTruck').length;var usedTruckLength = xmlobj.getElementsByTagName('usedTruck').length;if(usedTruckLength > 0){ for(var n=0; n<usedTruckLength; n++ ){var usedTid = xmlobj.getElementsByTagName('usedTruck/tId')[n].childNodes(0).nodeValue;var usedThk = xmlobj.getElementsByTagName('usedTruck/tHK')[n].childNodes(0).nodeValue;var usedTtype = xmlobj.getElementsByTagName('usedTruck/tType')[n].childNodes(0).nodeValue;var tfname = xmlobj.getElementsByTagName('usedTruck/tFname')[n].childNodes(0).nodeValue;usedTrListSelect.options.add(new Option(usedThk+"("+usedTtype+")", usedTid));}}}