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I found and inconsistent result when using the JavaScript date.getMonth() and date.getUTCMonth(), but only with some dates. The following example demonstrates the problem:
<!DOCTYPE html>
<html>
<body onload="myFunction()">
<p id="demo">Click the button to display the month</p>
<script type="text/javascript">
function myFunction()
{
var d = new Date(2012, 8, 1);
var x = document.getElementById("demo");
x.innerHTML=d;
x.innerHTML+='<br/>result: ' + d.getMonth();
x.innerHTML+='<br/>result UTC: ' + d.getUTCMonth();
}
</script>
</body>
</html>
The output of this example is:
Sat Sep 01 2012 00:00:00 GMT+0100 (Hora de Verão de GMT)
result: 8
result UTC: 7
If i change the date to (2012, 2, 1) the output is:
Thu Mar 01 2012 00:00:00 GMT+0000 (Hora padrão de GMT)
result: 2
result UTC: 2
In the first example, getMonth returns 7 and getUTCMonth returns 8. In the second example, both returns the same value 2.
Does anyone already experiences this situation? I am from Portugal and i think that it has something to be with my GMT but i don't understand why this is happening, because the examples are running in same circumstances.
Thanks in advances
260
The getMonth() method returns the month in the specified date according to local time, as a zero-based value (where zero indicates the first month of the year).
The getUTCMonth() returns the month of the specified date according to universal time, as a zero-based value (where zero indicates the first month of the year).
Universal Time Zone date methods are used for working with UTC dates
Date returns month between 0 to 11 new Date(1976, 01 , 18) - Wed Feb 18 1976 00:00:00 GMT+0530 (India Standard Time)
*getUTCDate return same as getDate() but returns Date based on World Time Zone, same with month and year
new Date(1976, 01 , 18).getUTCDate() - 17
new Date(1976, 01 , 18).getDate() - 18
new Date(1976, 02 , 18).getUTCMonth() - 2
new Date(1976, 01 , 18).getMonth() - 1
new Date(1976, 01 , 18).getYear() - 76
new Date(1976, 01 , 18).getUTCFullYear() - 1976
new Date(1976, 01 , 18).getFullYear() - 1976
107
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