Promise (initial support)

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A promise represents an asynchronous operation which eventually succeeds or fails.

WKWebView

macOS

*

iOS

8

iPadOS

*

Android WebView

Android

4.4.3

WebView2

Windows

*

Chrome Browser

Android

32

Safari Browser

iOS

8

Notes

Support data provided by: BCD logo

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This feature was documented on July 29, 2015.