/*
* 根据出生日计算年龄
*/
function ages(str){
var r = str.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);
if(r == null) return false;
var d = new Date(r[1],r[3]-1, r[4]);
if(d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]){
var Y = new Date().getFullYear();
return((Y-r[1]));
}
return("输入的日期格式错误!");
}
console.log(ages("1993-12-18"));
console.log(ages("2002-01-41"));