Run ❯
<!DOCTYPE html> <html> <body> <h2>JavaScript Date Object</h2> <p>This "home made" isDate() function returns true when used on an date:</p> <p id="demo"></p> <script> const myDate = new Date(); document.getElementById("demo").innerHTML = isDate(myDate); function isDate(myDate) { return myDate.constructor.toString().indexOf("Date") > -1; } </script> </body> </html>