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Custom elements are a key feature of Web Components that allows developers to define their own HTML tags.
Last updated on : 2023-03-20
Browser Versions
IE
Edge
Firefox
Chrome
Safari
Opera
Fully Supported
Partially
No Support
Custom Elements (V1) on IE is not supported on any IE versions.
Custom Elements (V1) on Edge is fully supported on 79-111, and not supported on 12-18 Edge versions.
Custom Elements (V1) on Firefox is fully supported on 63-113, and not supported on 2-62 Firefox versions.
Custom Elements (V1) on Chrome is fully supported on 67-114, partially supported on 54-66, and not supported on 4-53 Chrome versions.
Custom Elements (V1) on Safari is partially supported on 10.1-16.4, and not supported on 3.2-10 Safari versions.
Custom Elements (V1) on Opera is fully supported on 64-95, partially supported on 41-63, and not supported on 9.5-40 Opera versions.
Custom Elements (V1) on Safari on iOS is partially supported on 10.3-16.4, and not supported on 3.2-10 Safari on iOS versions.
Custom Elements (V1) on Android Browser is fully supported on 97-111, and not supported on 2.1-4 Android Browser versions.
Custom Elements (V1) on Opera Mobile is fully supported on 64-73, and not supported on 10-12 Opera Mobile versions.
Custom Elements (V1) on Chrome for Android is fully supported on all Chrome for Android versions.
Custom Elements (V1) on Firefox for Android is fully supported on all Firefox for Android versions.
Custom Elements (V1) on Samsung Internet is fully supported on 6.2-20, partially supported on 5-5, and not supported on 4-4 Samsung Internet versions.
Data sourced from
Overall Browser Compatibility Score
Note:Custom Elements (V1) 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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