The toISOString() method of Date instances returns a string representing this date in the date time string format, a simplified format based on ISO 8601, which is always 24 or 27 characters long (YYYY-MM-DDTHH:mm:ss.sssZ or ±YYYYYY-MM-DDTHH:mm:ss.sssZ, respectively). The timezone is always UTC, as denoted by the suffix Z.
Date.prototype.toISOString()
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Syntax
js
toISOString()
Parameters
None.
Return value
A string representing the given date in the date time string format according to universal time. It's the same format as the one required to be recognized by Date.parse().
Exceptions
-
RangeError -
Thrown if the date is invalid or if it corresponds to a year that cannot be represented in the date string format.
Examples
Using toISOString()
js
const d = new Date(0);
console.log(d.toISOString()); // "1970-01-01T00:00:00.000Z"
Specifications
Browser compatibility
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | Deno | Node.js | ||
toISOString |
3 | 12 | 1 | 10.5 | 4 | 18 | 4 | 11 | 3.2 | 1.0 | ≤37 | 1.0 | 0.10.0 | |
See also
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString