Date.prototype.toISOString()

The toISOString() method returns a string in simplified extended ISO format (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 zero UTC offset, as denoted by the suffix "Z".

Syntax

toISOString()

Return value

A string representing the given date in the ISO 8601 format according to universal time.

Examples

Using toISOString()

let today = new Date('05 October 2011 14:48 UTC')

console.log(today.toISOString())  // Returns 2011-10-05T14:48:00.000Z

The above example uses parsing of a non–standard string value that may not be correctly parsed in non–Mozilla browsers.

Specifications

Browser compatibility

See also

• Date.prototype.toLocaleDateString()
• Date.prototype.toTimeString()
• Date.prototype.toUTCString()
• A polyfill