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what is the answer?


Posted Date: 29 Aug 2008      Total Responses: 1
Posted By: Ravi Kiran.T       Member Level: Gold     Points: 1


function getXHRObject(){
var req = null;
if(window.XMLHttpRequest){
req = new XMLHttpRequest();
}
else if(window.ActiveXObject){
req = new ActiveXObject("Microsoft.XMLHTTP");
}
return req;
}
function performRequest(){
var xhr = getXHRObject();
xhr.open("GET","test.xml",false);
xhr.onreadystatechange = function(){
if(xhr.readyState == 4 && xhr.status == 200){
alert(xhr.responseXML);
}
}
xhr.send(null);
}

Assume test.xml is properly formed and sent with the correct mime type.
Referring to the code and statement above, which one of the following occurs when the method performRequest is executed in Microsoft IE?

Options:

Choice 1
It throws an error since you cannot request an xml file directly.

Choice 2
An alert statement appears with [object] in it.(checked)

Choice 3
An alert statement appears with the XML file's text in it.

Choice 4
No alert appears since requesting a file returns a status code of zero.
Choice 5
No alert appears since onreadystatechange does not execute.




Responses
Author: Pradeep Kumar Chaudhary    29 Aug 2008Member Level: GoldRating:     Points: 2
Choice 4
No alert appears since requesting a file returns a status code of zero.
This is the right answer.


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