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How to check whether a JavaScript date is valid?
To check whether a JavaScript date is valid or not, you can try to run the following code −
Example
<!DOCTYPE html> <html> <body> <script> var date1, date2; date1 = new Date("2018/1/1"); if( ! isNaN ( date1.getMonth() )) { document.write("Valid date1: "+date1); }else{ document.write("<br>Invalid date1"); } date2 = new Date("20181/1"); if( ! isNaN ( date2.getMonth() )) { document.write("<br> Valid date2: "+date2); }else{ document.write("<br>Invalid date2"); } </script> </body> </html>
Output
Valid date1: Mon Jan 01 2018 00:00:00 GMT+0530 (India Standard Time) Valid date2: Mon Jan 01 20181 00:00:00 GMT+0530 (India Standard Time)
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