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Promises

A promise represents the eventual result of an asynchronous operation, providing methods to check if it is fulfilled or is rejected and to extract the resulting values.

Last updated on : 2023-03-20

Browser Versions

Edge

Firefox

Chrome

Safari

Opera

5.5 - 11

12 - 111

2 - 26

27 - 28

29 - 113

4 - 31

32 - 32

33 - 114

3.2 - 7

7.1 - 16.4

9.5 - 18

19 - 19

20 - 95

Fully Supported

Partially

No Support

Browser Compatibility

Promises on IE is not supported on any IE versions.

Promises on Edge is fully supported on all Edge versions.

Promises on Firefox is fully supported on 29-113, partially supported on 27-28, and not supported on 2-26 Firefox versions.

Promises on Chrome is fully supported on 33-114, partially supported on 32-32, and not supported on 4-31 Chrome versions.

Promises on Safari is fully supported on 7.1-16.4, and not supported on 3.2-7 Safari versions.

Promises on Opera is fully supported on 20-95, partially supported on 19-19, and not supported on 9.5-18 Opera versions.

Promises on Safari on iOS is fully supported on 8.1-16.4, and not supported on 3.2-7 Safari on iOS versions.

Promises on Android Browser is fully supported on 4.4-111, and not supported on 2.1-4 Android Browser versions.

Promises on Opera Mobile is fully supported on 64-73, and not supported on 10-12 Opera Mobile versions.

Promises on Chrome for Android is fully supported on all Chrome for Android versions.

Promises on Firefox for Android is fully supported on all Firefox for Android versions.

Promises on Samsung Internet is fully supported on all Samsung Internet versions.

Browser Support for Promises

Promises on Chrome

Promises on Safari

Promises on Firefox

Promises on Internet Explorer

Promises on Opera

Promises on Edge

References

Data sourced from

High

Overall Browser Compatibility Score

Note:Promises shows a browser compatibility score of 92. This is a collective score out of 100 to represent browser support of a web technology. The higher this score is, the greater is the browser compatibility. The browser compatibility score is not a 100% reflection for every browser and the web technology support. However, it does give you an estimate on how much you should rely on a particular web technology in terms of browser compatibility.

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