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Other References

CSSStyleDeclaration JS Conversion


JavaScript Date.now()

Příklad 1

let ms = Date.now();

Definice a použití

Date.now()vrátí počet milisekund od 1. ledna 1970.

Poznámky

Date.now() je statická metoda objektu Date.

Nemůžete jej použít na rande jako myDate.now()

Syntaxe je vždy Date.now().

Příklad 2

Vypočítejte počet let od 1. 1. 1970:

// Calculate milliseconds in a year
const minute = 1000 * 60;
const hour = minute * 60;
const day = hour * 24;
const year = day * 365;

// Divide Date.now() with a year
let years = Math.round(Date.now() / year);

Podpora prohlížeče

Date.now()je funkce ECMAScript5 (ES5).

ES5 (JavaScript 2009) plně podporován ve všech prohlížečích:

Chrome IE Edge Firefox Safari Opera
Yes 9-11 Yes Yes Yes Yes


Syntax

Date.now()

Parametry

ŽÁDNÝ

Návratová hodnota

Číslo.

Počet milisekund od půlnoci 1. ledna 1970 00:00:00 UTC.