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How to encode/decode base64 with JS

konyu profile image @kon_yu github logo ・1 min read  

Execution environment

Chrome ver. 79.0
Confirmation of operation with console of Dev tool

Encoding to base64 is done with the btoa command

btoa("This is a test.")
> "VGhpcyBpcyBhIHRlc3Qu"

To decode a base64 encoded string, use the atob command

atob("VGhpcyBpcyBhIHRlc3Qu")
> "This is a test."
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