javascript check valid date (Pure javascript)
If you want to use pure javascript to check a date, here it is: The idea is coming from this post . Date.isValidDate= function(y,m,d){ if(typeof y != 'number') y = new Date().getFullYear(); if(typeof m != 'number') m = new Date().getMonth(); if(typeof d != 'number') d = new Date().getDate(); switch(m){ case 0: case 2: case 4: case 6: case 7: case 9: case 11: return new Date(y, m, d).getDate() <= 31; break; case 3: case 5: case 8: case 10: return new Date(y, m, d).getDate() <= 30; break; case 1: return new Date(y, m, d).getDate() <= 29; break; default: return false; break; } } Usage: Date.isValidDate(2012, 1, 29) => True //Feb 29, 2012 Date.isValidDate(2012, 0, 31) => True //Jan 31, 2012 Date.isValidDate(2013, 1, 29) => False //Feb 29, 2013 Date.isValidDate(2012, 3, 31) => False //Apr 31, 2013 Remind: m - Month in Javascript, ranging fro