Hello
I'm testing the XMLHttpRequest object in Firefox and IE. The code
below works well in IE and Firefox. It shows "1" when the string is a
number and "0" when not. The page aspxTest.aspx only write "0" or "1"
with a "response.write" method.
The problem that I have is when I try this example with Synchronous
mode. If I change the function sendNum with:
xmlhttp.open("GET",url,false);
In IE works well (show "0" or "1") but in Firefox don't show anything.
I have put an alert in "end" function before the condition of
xmlhttp.readyState but anything is writed. What's is wrong?
Thanks a lot
<html>
<head>
<script>
var xmlhttp;
function sendNum ()
{
try
{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e)
{
try
{
xmlhttp=new ActiveXObject("Msxml2.XMLHTTP")
}
catch (E)
{
xmlhttp=false
}
}
if (!xmlhttp && typeof XMLHttpRequest!='undefined')
{
try
{
xmlhttp = new XMLHttpRequest();
}
catch (e)
{
xmlhttp=false
}
}
xmlhttp = new XMLHttpRequest();
var url = "http://localhost/Test/aspxTest.aspx?num=" +
document.forms['f'].elements['num'].value;
xmlhttp.open("GET",url,true);
xmlhttp.onreadystatechange = end;
xmlhttp.setRequestHeader('Accept','message/x-jl-formresult')
xmlhttp.send(null);
}
function end ()
{
//alert("end function");
if (xmlhttp.readyState == 4)
{
alert(xmlhttp.responseText);
}
}
</script>
</head>
<body>
<form id="f">
Number: <input type="text" width="100px" id="num">
<input type="button" value="is a number" onclick="sendNum()">
</form>
</body>
</html>
