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Editorial Team
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Asked: 2026-06-03T02:04:42+00:00

I’m not overly familiar with javascript, but I’ve played around with enough to get

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I’m not overly familiar with javascript, but I’ve played around with enough to get this far with a script I found on this site.

<script>
function updateClock ( ) {
var sd = Math.round(new Date().getTime() * 0.0000067322371075102 );
document.getElementById("stardate").firstChild.nodeValue = sd;
}
</script>
<body onload="updateClock(); setInterval('updateClock()', 1000 )">
<span id="stardate">&nbsp;</span>
</body>

The output is a number that is very close to the stardate calculation used currently in Star Trek Online. However, that number should have the decimal point move left 2 places. Adding and removing zeros in my equation will shorten or extend my count, but I need a decimal, and I’m completely unaware how I can get this to happen.

Does anyone have an idea for me?

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1 Answer

  1. Editorial Team

    Either:

    var sd = ...
var dotted = (sd+"").replace(/..$/,'.$&');

    Or: 

    var sd = ...
var dotted = (sd/100).toFixed(2);

    Some advice:

    1. It’s not a good idea to mix JavaScript in your HTML; instead of putting JavaScript in HTML attributes programmatically attach your handlers. For example:

      <!-- in the <head> -->
<script type="text/javascript">
  window.addEventListener('load',function(){
    // this code will run once the page has loaded
  },false);
</script>

<!-- or alternatively right before </body> put -->

<script type="text/javascript">
  // this code will run once all elements have been created
</script>

    2. setInterval can take a function value as a reference. Instead of writing:

      // this creates a new anonymous function that invokes foo()
// similar to using  new Function("foo()")
setInterval("foo()",1000);

      …better to do this:

      setInterval(foo,1000); // Functionally equivalent, less typing
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