function checkDate(theDate){ var reg = /^d{4}-((0{0,1}[1-9]{1})|(1[0-2]{1}))-((0{0,1}[1-9]{1})|([1-2]{1}[0-9]{1})|(3[0-1]{1}))$/; var result=true; if(!reg.test(theDate)) result = false; else{ var arr_hd=theDate.split("-"); var dateTmp; dateTmp= new Date(arr_hd[0],parseFloat(arr_hd[1])-1,parseFloat(arr_hd[2])); if(dateTmp.getFullYear()!=parseFloat(arr_hd[0]) || dateTmp.getMonth()!=parseFloat(arr_hd[1]) -1 || dateTmp.getDate()!=parseFloat(arr_hd[2])){ result = false } } return result; }