How to convert a full date to a short date in javascript?

Question

I have a date like this Monday, January 9, 2010

I now want to convert it to

1/9/2010 mm/dd/yyyy

I tried to do this

    var startDat         


        

Answer 1

Built-in toLocaleDateString() does the job, but it will remove the leading 0s for the day and month, so we will get something like "1/9/1970", which is not perfect in my opinion. To get a proper format MM/DD/YYYY we can use something like:

new Date(dateString).toLocaleDateString('en-US', {
  day: '2-digit',
  month: '2-digit',
  year: 'numeric',
})