JS based on the birthday of the method of age

This article describes the JS based on the birthday of the age of the method. Share to everyone for your reference. The implementation methods are as follows:

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function parsedate (str) {if (Str.match (/^d{4}[-/s+]d{1,2}[-/s+]d{1,2}$/)) { return new Date (Str.replace (/[-/s+]/i, '/')); else if (Str.match (/^d{8}$/)) {return new Date (str.substring (0,4) + '/' +str.substring (4,6) + '/' +str.substring (6));} else{return (' Time conversion error! '); } function Getagebybrithday (birthday) {var age=-1; var today=new Date (); var todayyear=today.getfullyear (); var Todaymon Th=today.getmonth () +1; var todayday=today.getdate (); var birthday=parsedate (birthday); if (Parsedate (birthday)!= ' time conversion has an error! ') {birthdayyear=birthday.getfullyear (); Birthdaymonth=birthday.getmonth (); birthdayday=birthday.getdate (); if ( todayyear-birthdayyear<0) {alert ("Birth date selection Error!");} else {if (todaymonth*1-birthdaymonth*1<0) {age = (todayyear*1- birthdayyear*1)-1; else {if (todayday-birthdayday>=0) {//alert (thisday+ '-' +brithd+ ' _ddd '); age = (todayyear*1-birthdayyear*1);} else {age = (todayyear*1-birthdayyear*1)-1;} } return age*1; } else {return-1;}}

I hope this article will help you with your JavaScript programming.

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