date2Age.js

// from http://stackoverflow.com/questions/5786186/javascript-age-count-from-date-of-birth
function date2Age(str){ // 根据年月日计算年龄str 格式为yyyy-mm-dd
	var diff = new Date - new Date(parseISO8601(str));
	var diffdays = diff / 1000 / (60 * 60 * 24);
	return Math.floor(diffdays / 365.25)
}
//form http://stackoverflow.com/questions/2182246/javascript-dates-in-ie-nan-firefox-chrome-ok
function parseISO8601(dateStringInRange) { // fixed IE8 NaN
     var isoExp = /^\s*(\d{4})-(\d\d)-(\d\d)\s*$/,
         date = new Date(NaN),
         month,
         parts = isoExp.exec(dateStringInRange);
     if (parts) {
         month = +parts[2];
         date.setFullYear(parts[1], month - 1, parts[3]);
         if (month != date.getMonth() + 1) {
             date.setTime(NaN);
         }
     }
     return date;
}