Displaying Yesterday's Date

Question

How can the following code be modified to display yesterday's date instead of today's date? For example, "Sunday, February 1, 2015", should become "Saturday, January 31, 2015".

<script type="text/javascript">
<!--
  // Array of day names
  var dayNames = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
  // Array of month Names
  var monthNames = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
  var now = new Date();
  document.write(dayNames[now.getDay()] + ", " + 
  monthNames[now.getMonth()] + " " + 
  now.getDate() + ", " + now.getFullYear());
// -->
</script>

http://stackoverflow.com/questions/10931288/how-to-add-subtract-dates-with-javascript — Jackson, Feb 21 '15 at 20:47

score 1 · Accepted Answer · answered Feb 21 '15 at 20:39

Just put a line now.setDate(now.getDate()-1); it will set the Date to yesterday's date.

  var dayNames = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
  var monthNames = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
  var now = new Date();
  now.setDate(now.getDate()-1);
  document.write(dayNames[now.getDay()] + ", " + 
  monthNames[now.getMonth()] + " " + 
  now.getDate() + ", " + now.getFullYear());

Displaying Yesterday's Date

1 Answers1