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JavaScript Date method: setUTCSeconds()

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The setUTCSeconds() method (when applied to a JavaScript date) sets the date variable’s UTC second (and optionally its millisecond).

 

It has the following syntax with the following parameters:

 

date.setUTCSeconds(second,millisecond)

 

Parameter

Required / Optional

Description

second

Required

Integer representing seconds. Typically, will be in range 0 – 59. However, e.g. 0 will result in last second of previous minute, 60 will result in first second of next minute, etc.

millisecond

Optional

Integer representing milliseconds. Typically, will be in range 0 – 999. However, e.g. 0 will result in last millisecond of previous second, 1000 will result in first millisecond of next second, etc.

 

EXAMPLE:


HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head>
<style>
table,th,tr,td {border: 1px solid black; border-collapse: collapse;}
</style>
</head>
<body>
<table>
<tr>
<th>Example</th>
<th>Resulting value of <code>x</code></th>
</tr>
<tr>
<td><code id="Example"></code></td>
<td><code id="Result"></code></td>
</tr>
</table>

<script>
var d = new Date(Date.now());
document.getElementById("Example").innerHTML =
  'var d = new Date(Date.now());<br>' +
  'var x = new Date(d.setUTCSeconds(1)).toISOString();';
document.getElementById("Result").innerHTML =
  new Date(d.setUTCSeconds(1)).toISOString();
</script>

</body>
</html>

FUNCTION THAT MAY ASSIST IN TESTING WHETHER FEATURE IS SUPPORTED:
function isSupportedJavaScriptMethodDateSetUTCSeconds() {
  var d = new Date(Date.now()); return !!d.setUTCSeconds;
}


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