I have tried but not able to do this. Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor. In order to perform validation, simply pass a date string to the moment … Could you please help me on this how to fix. The lightweight JavaScript library Moment.js makes working with date and time values a breeze. the date formats are working properly in Google chrome but not able to get those dates in IE browser. Another annoying task that Moment.js has greatly simplified is date validation. This method will get/set the day of the week. ; If the date is Invalid then the getTime() method will return NaN which is not equal to itself. We have also checked the leap year factor for the month of February. What I have tried: I have tried with the below code. This will return a copy of the Date that the moment uses, so any changes to that Date will not cause moment to change. ; If the date is valid then the getTime() method will always be equal to itself. Moment.js - Date validation example We can use the isValid() method to check if the date and time object is valid. It takes input from 0-6, where 0 is for Sunday and 6 as Saturday. Moment.js today's date. No matter what language you use, working with date values is often a cumbersome process. Parse, validate, manipulate, and display dates and times in JavaScript. Store the date object into a variable d.; Check if the variable d is created by Date object or not by using Object.prototype.toString.call(d) method. You can set the day of week using number or string. Tried now with latest 1.7.1 branch and it looks like isValid returns true for much more invalid dates and instead in one case false when the date is actually valid In the following examples, a JavaScript function is used to check a valid date format against a regular expression. Date Validation. 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