![]() ![]() We looked at how to use the native Buffer module to perform the Base64 encoding and decoding in a Node.js application. That's all for Base64 encoding and decoding in Node.js. log (str ) // Base64 Encoding in Node.js Conclusion toString ( 'utf-8' ) // print normal stringĬonsole. from (base64, 'base64' ) // decode buffer as UTF-8 const str = buff. ![]() Here is what it looks like: // Base64 encoded string const base64 = 'QmFzZTY0IEVuY29kaW5nIGluIE5vZGUuanM=' // create a buffer const buff = Buffer. All you need to do is create a buffer from the Base64 encoding string by using base64 as the second parameter to om() and then decode it to the UTF-8 string by using the toString() method. The Base64 decoding process is very much similar to the encoding process. The second parameter in om() is optional when dealing with plain-text (UTF-8) strings. In the above example, we created a buffer from the string and used the toString() method to decode the buffer as a Base64 string. log (base64 ) // QmFzZTY0IEVuY29kaW5nIGluIE5vZGUuanM= toString ( 'base64' ) // print Base64 stringĬonsole. from (str, 'utf-8' ) // decode buffer as Base64 const base64 = buff. Here is an example: // plain-text string const str = 'Base64 Encoding in Node.js' // create a buffer const buff = Buffer. If no character encoding is specified, UTF-8 will be used as the default. This method takes two parameters, a plain-text string, and the character encoding, and creates a buffer or binary data array for the given encoding. To convert a string into a Base64 encoded string, we first create a buffer from the given string using the om() method. Let us look at the below examples that explain how to use the Buffer object to perform Base64 encoding and decoding in a Node.js application. This includes to and from UTF-8, UCS2, Base64, ASCII, UTF-16, and even the HEX encoding scheme. The Buffer object provides several methods to perform different encoding and decoding conversions. Internally, Buffer represents binary data in the form of a sequence of bytes. Buffer is available as a global object, and you don't need to explicitly require this module in your application. Luckily, Node.js provides a native Buffer module that can be used to perform Base64 encoding and decoding. These methods are part of the window object and are only available in the browser. Unfortunately, Node.js doesn't support standard JavaScript functions like atob() and btoa() for Base64 encoding. Today, you'll learn how to do the Base64 encoding and decoding in a Node.js application. ![]() Here’s a code snippet translating a base64-encoded string to UTF8: // using the base64 encoded string from aboveĬonst plain = om('dXNlcm5hbWU6cGFzc3dvcmQ=', 'base64').In an earlier article, we looked at how to Base64 encode and decode a string in Java and JavaScript. ![]() You can then translate the encoding to a UTF8 representation. Make sure to pass the correct encoding to initialize the buffer correctly. Pass it your base64-encoded string as the first argument and the base64 encoding as the second argument. Again, create a buffer instance using the om method. Here’s a code snippet translating a string in UTF8 encoding to base64: const encoded = om('username:password', 'utf8').toString('base64')ĭecoding a base64-encoded string is also possible using the global Buffer class. Pass the value you want to base64-encode as the first argument and the current encoding as the second argument. You can create a buffer instance using the om method. Node.js supports data encoding via the global Buffer class. Retrieve the List of Supported Hash Algorithms Join an Array of Strings to a Single String Value Sort an Array of Objects in JavaScript, TypeScript or Node.jsĬheck If a Value Is an Array in JavaScript or Node.js Sort an Array of Strings in JavaScript, TypeScript or Node.js How to Reverse an Array in JavaScript and Node.js Retrieve a Random Item From an Array in JavaScript or Node.js How to Exit, Stop, or Break an Array#forEach Loop in JavaScript or Node.js How to Get an Index in a for…of Loop in JavaScript and Node.js Split an Array Into Smaller Array Chunks in JavaScript and Node.js How to Exit and Stop a for Loop in JavaScript and Node.js Sort a Boolean Array in JavaScript, TypeScript, or Node.jsĬheck If an Array Contains a Given Value in JavaScript or Node.jsĪdd an Item to the Beginning of an Array in JavaScript or Node.jsĪppend an Item at the End of an Array in JavaScript or Node.js Sort an Array of Integers in JavaScript and Node.js Get an Array With Unique Values (Delete Duplicates) How to Run an Asynchronous Function in Array.map()Ĭlone/Copy an Array in JavaScript and Node.js ![]()
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