function?loadXMLDoc(fileName){
????var?xmlhttp;
????if(window.XMLHttpRequest){
????????xmlhttp?=?new?XMLHttpRequest();
????}
????xmlhttp.onreadystatechange?=?function(){
????????if(xmlhttp.readyState?==?4?&&?xmlhttp.status?==?200){
????????????return?xmlhttp.responseXML;
????????}
????}
????xmlhttp.open("GET",?fileName,?true);
????xmlhttp.send();
}
window.onload?=?function(){
????var?xmlDoc?=?loadXMLDoc("./note.xml");
????alert(xmlDoc);
}返回的xmlDoc是undefined，意思是文件讀取失敗了？文件路徑是對(duì)的，控制臺(tái)也沒報(bào)錯(cuò)，請(qǐng)問問題出在哪？
ajax獲取不到對(duì)象
慕先生4543078
2017-04-15 18:39:47
