对于下面程序段，不正确的说法是()。 function loadXMLDoc() { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("myDiv").innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET","/ajax/test1.txt",true); xmlhttp.send(); }

XMLHttpRequest对象有几个返回状态值

Ajax由DOM,CSS,JavaScript,XmlHttpRequest四种技术组成,控制通信的是() A: DOM B: CSS C: JavaScript D: XMLHttpRequest

创建一个窗口frame的语句是( )。 A: window = new Window() B: window = Window() C: window = Frame() D: frame = wx.Frame(None)

Nothing was found but ___ broken. A: the room window B: the room’s window C: the room of the window D: the window of room

Do you mind my ______ A: open the window B: that open the window C: opening the window D: to open the window

Ajax有四种技术组成：DOM,CSS,JavaScript，XmlHttpRequest中控制文档结构的是： A: DOM B: CSS C: javascript D: XMLHttpRequest

Please go to ______ to pick up your ID card. A: third window B: the window three C: window third D: the third window

下面哪些是XMLHttpRequest对象常用的方法？

Ajax的核心技术，就是使用了XMLHttpRequest对象。