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Node.js - encoding / decoding base64

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Created by:

GamerGoals22

364

In this short article, we would like to show how to encode text to base64 and back (decode base64) in Node.js.

Note:

In the presented solution, we use the Buffer class, which has a global scope in Node.js and does not need to be imported using the require.

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const Base64 = {
    encode: (text) => {
        const buffer = Buffer.from(text, 'binary');
        return buffer.toString('base64');
    },
    decode: (base64) => {
        const buffer = Buffer.from(base64, 'base64');
        return buffer.toString('binary');
    },
};
​
// Example:
​
console.log(Base64.encode('This is text...'));      // VGhpcyBpcyB0ZXh0Li4u
console.log(Base64.decode('VGhpcyBpcyB0ZXh0Li4u')); // This is text...