Date.now() Current timestamp
Last updated: 2026-09-09
Date.now() Current timestamp
Date.now returns milliseconds since Unix epoch — the simplest timestamp method.
| Category | Dates |
|---|---|
| ES version | ES5 |
📝 Syntax
const timestamp = Date.now();Returns：Milliseconds since epoch.
Mutates the original：No (returns a new value)
▶ Example
Edit the code, press Run, and see the result in the output panel:
Output：
1788937260483
false
0ms💡 Tip Static — no need for new Date(), better performance.
ℹ️ info Timestamps for cache expiry, unique IDs and performance measurement.
🌐 Browser support
| Browser |  Chrome |
 Edge |
 Firefox |
 Safari |
 Opera |
|---|---|---|---|---|---|
| Date.now() | ✓ v1 | ✓ v12 | ✓ v1 | ✓ v1 | ✓ v1 |
| Supported by all modern browsers | |||||
🏷️ Related Items
💡 Related Cases
More case studies coming soon — check back later.
📚 Related Tutorials
❓ FAQ
QDate.now() vs new Date().getTime()?
ASame result; Date.now() is simpler and doesn't create a Date object.
QWhat unit is the timestamp?
AMilliseconds (not seconds). Divide by 1000 for seconds.
QHow to convert back to a Date?
Anew Date(timestamp).
