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Custom Elements (deprecated V0 spec)

The custom-elements package provides a native, easy way to define and use custom elements in JavaScript. It has been extracted from the main Web Components standards effort, based on our experience with real-world use cases.

Last updated on : 2023-03-20

Browser Versions

Edge

Firefox

Chrome

Safari

Opera

5.5 - 11

12 - 111

79 - 79

2 - 113

4 - 114

33 - 79

3.2 - 16.4

9.5 - 95

20 - 66

Fully Supported

Partially

No Support

Browser Compatibility

Custom Elements (deprecated V0 spec) on IE is not supported on any IE versions.

Custom Elements (deprecated V0 spec) on Edge is fully supported on 79-79, and not supported on 12-111 Edge versions.

Custom Elements (deprecated V0 spec) on Firefox is not supported on any Firefox versions.

Custom Elements (deprecated V0 spec) on Chrome is fully supported on 33-79, and not supported on 4-114 Chrome versions.

Custom Elements (deprecated V0 spec) on Safari is not supported on any Safari versions.

Custom Elements (deprecated V0 spec) on Opera is fully supported on 20-66, and not supported on 9.5-95 Opera versions.

Custom Elements (deprecated V0 spec) on Safari on iOS is not supported on any Safari on iOS versions.

Custom Elements (deprecated V0 spec) on Android Browser is fully supported on 4.4-4.4, and not supported on 2.1-111 Android Browser versions.

Custom Elements (deprecated V0 spec) on Opera Mobile is not supported on any Opera Mobile versions.

Custom Elements (deprecated V0 spec) on Chrome for Android is not supported on any Chrome for Android versions.

Custom Elements (deprecated V0 spec) on Firefox for Android is not supported on any Firefox for Android versions.

Custom Elements (deprecated V0 spec) on Samsung Internet is fully supported on 4-12, and not supported on 13-20 Samsung Internet versions.

Browser Support for Custom Elements (deprecated V0 spec)

Custom Elements (deprecated V0 spec) on Chrome

Custom Elements (deprecated V0 spec) on Safari

Custom Elements (deprecated V0 spec) on Firefox

Custom Elements (deprecated V0 spec) on Internet Explorer

Custom Elements (deprecated V0 spec) on Opera

Custom Elements (deprecated V0 spec) on Edge

References

Data sourced from

Low

Overall Browser Compatibility Score

Note:Custom Elements (deprecated V0 spec) shows a browser compatibility score of 0. 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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