Javascript date does not look right when month changes

Question

My eyes should fool me, but when I call setMonth(1) , should the date of this object date be in February? (Today is March 30, 2016)

 x = new Date(); y = new Date(); x.setMonth(1); document.write(x.toString() + '<br>' + y.toString()); 

Results in:

Answer 1

No February 30, 2016.

Thus, the date handler correctly changes the date until March 1, 2016.