The following script returns 20 instead of 21!
var d = new Date(2010/03/21);
document.write(d.getDate());
What am I doing wrong? Is this a JavaScript bug?
The Date.parse method is implementation dependent (new Date(string) is equivalent to Date.parse(string)).
While this format will be available on modern browsers, you cannot be 100% sure that the browser will interpret exactly your desired format.
I would recommend you to manipulate your string, and use the Date constructor with the year, month and day arguments:
// parse a date in yyyy-mm-dd format
function parseDate(input) {
var parts = input.match(/(d+)/g);
// new Date(year, month [, date [, hours[, minutes[, seconds[, ms]]]]])
return new Date(parts[0], parts[1]-1, parts[2]); // months are 0-based
}
