JSFiddle - React, Tailwind, and code Playground

by refhat

HTML

<input type="text" id="check_date" onkeyup="isValidDate()">

JavaScript

var iDate = $("#check_date").value;    if(iDate.length > 0) {     var a = iDate.split("/");      if(isValidDate(a[0],a[1]-1,a[2]) == false){       alert("You have entered an invalid date.");       return false;     }  isValidDate = function(day,month,year) {   var dteDate;   dteDate=new Date(year,month,day);   return ((day==dteDate.getDate()) && (month==dteDate.getMonth()) && (year==dteDate.getFullYear())); }