A.xmlHttpRequest. callBackMethod=onreadystatechange; B.xmlHttpRequest. onreadystatechange(callBackMethod); C.xmlHttpRequest. onreadystatechange(new function(){callBackMethod }); D.xmlHttpRequest. onreadystatechange= callBackMethod;
A.onreadystatechange B.abort C.responseText D.status
A.JavaScript B.DOM文檔對象 C.CSS樣式表 D.XMLHttpRequest對象