JavaScript Date method: setUTCDate()
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The setUTCDate() method (when applied to a
JavaScript
date) sets the
date variable’s UTC day of month.
It
has the following syntax with the following parameters:
date.setUTCDate(day)
|
Parameter
|
Required / Optional
|
Description
|
|
day
|
Required
|
Integer representing UTC
day of month. Typically, will be in range 1 – 31. However, 0 will result in
last day of previous month, -1 the day before that etc., and e.g. 32 for a 30-day
month will be second day of following month
|
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.setUTCDate(1)).toISOString();';
document.getElementById("Result").innerHTML =
new Date(d.setUTCDate(1)).toISOString();
</script>
</body>
</html>
|
FUNCTION THAT MAY ASSIST IN TESTING WHETHER FEATURE IS SUPPORTED:
function isSupportedJavaScriptMethodDateSetUTCDate() {
var d = new Date(Date.now()); return !!d.setUTCDate;
} |
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