JavaScript PlainDateTime equals()
Example
const date1 = Temporal.PlainDateTime.from("2026-05-17T14:30:00");
const date1 = Temporal.PlainDateTime.from("2026-05-17T14:30:00");
let result = date1.equals(date2);
Try it Yourself »
Description
The equals() method returns true
if this date is equal in value to the other date.
The equals() method does not change the original PlainDateTime.
Syntax
plaindatetime.equals(other)
Parameters
| Parameter | Description |
| other | Another date. |
Return Value
| Type | Description |
| Boolean | true if this date is equal in value to the other date. |
Note
The equals() method compares only values of the same type.
Other Temporal types must be converted before comparison.
Browser Support
Temporal is a major update to the JavaScript standard (TC39).
It is currently fully supported in Chrome, Edge, and Firefox, and is expected to reach full availability across browsers before the summer of 2026.
| Chrome 144 |
Edge 144 |
Firefox 139 |
Safari |
Opera |
| Jan 2026 | Jan 2026 | May 2025 | 🚫 | 🚫 |
Opera and Safari Support
Opera support will probably appear 1-3 browser cycles after Chromium, which often means a few months later.
The implementation is actively in development and can be tested today in Safari Technology Preview by enabling the --use-temporal runtime flag.
Polyfill
Until Opera and Safari supports Temporal natively, you can use the official polyfill:
<script
src="https://cdn.jsdelivr.net/npm/@js-temporal/polyfill/dist/index.umd.js">
</script>
