function validate(date){ var eighteenYearsAgo = moment().subtract(18, "years"); var birthday = moment(date); if (!birthday.isValid()) { return "invalid date"; } else if (eighteenYearsAgo.isAfter(birthday)) { return "okay, you're good"; } else { return "sorry, no"; } }

Mar 15, 2016 · if you're simply trying to validate whether or not a string is a valid date, you can just check that it creates a valid date object. return !isNaN((new Date(d)).getTime()); https://jsfiddle.net/46cztok6/ so your validate() function would look like this. var birthday = document.getElementById('bday').value; if(!isValidDate(birthday)){

Aug 22, 2023 · There are times when you need to validate a date input in your JavaScript applications. This article will show you how to perform the following date validations: Check if a string is a valid date; Validate a string in the DD/MM/YYYY format; Check if …

May 22, 2012 · Whether you need some advanced date validation rules, you could use a JS date framework, like Moment.js (or Date.js, which is pretty outdated at the moment). you can use the date class, just like this. var x=new Date('1/1/2001'); var Cnow=new Date();//current Date. if(Cnow.getFullYear()- x.getFullYear()<18){ alert('not old enough'); else{

Oct 4, 2018 · In this article I will explain with an example, how to implement Date of Birth (Age) Validation using Regular Expressions (Regex) in JavaScript. There will be two types of Validations: 1. Date format dd/MM/yyyy validation: The Date of Birth (DOB) will be first validated for dd/MM/yyyy format using Regular Expression (Regex).

Aug 28, 2024 · Validating dates in JavaScript can be tricky because of the variety of potential date formats and rules. This comprehensive guide will teach you how to properly validate dates in your JavaScript applications using native Date methods and regular expressions.

Mar 11, 2024 · In this tutorial we will show you the solution of date of birth validation in JavaScript, here we defined three input tags for collect users birth date, month, year separately. Another input tag defined for submit button then using div tag with id ‘age’ will helps to append the result.

Mar 10, 2023 · Using JavaScript to validate date and time input fields. Regular expressions for validation of various date and time formats. Working examples.

Oct 4, 2018 · In this article I will explain with an example, how to validate Date in dd/MM/yyyy format using Regular Expression (Regex) in JavaScript.

Aug 19, 2022 · Date validation. It is very important to validate the data supplied by the user through a form before you process it. Among various kind of data validation, validation of date is one. In this tutorial, we discussed how you can perform JavaScript date validation in 1. dd/mm/yyyy or dd-mm-yyyy format. 2. mm/dd/yyyy or mm-dd-yyyy format.