Web API | TextDecoder decode() Method Last Updated : 11 Jul, 2022 Comments Improve Suggest changes Like Article Like Report The decode() method in TextDecoder API is used to takes a stream of bytes as input and emits a stream of code points. The TextEncoder decode() method takes an ArrayBuffer containing the encoded data and options object and returns the original string (i.e. decoded string). Syntax: decoder.decode(buffer, options) Parameters: buffer: It is an ArrayBuffer, Dataview or TypedArray instance that contains the encoded data.options: It is an optional parameter that holds an object containing some properties. stream: It is a boolean value. It is set to true if data are processing in chunks and false if data are not chunked (by default its value set to false) Return Value: It decodes the encoded input in buffer and returns the decoded string. Example 1: HTML <!DOCTYPE html> <html lang="en"> <head> <title> TextEncoder Web API encodeInto() method </title> </head> <body> <p id='javascript'>I Love javascript</p> <script type="text/javascript"> // Original string const original = document.querySelector( '#javascript').textContent // Instance of TextEncoder const encoder = new TextEncoder() // Instance of TextDecoder const decoder = new TextDecoder() // encode() is just an another method // defined in TextEncoder class // It specifies the encoded result // of strings const encodedResult = encoder.encode(original) // Decoding const decodedResult = decoder.decode(encodedResult) console.log(` Original String: ${original}, Encoded Value: ${encodedResult}, Decoded Value: ${decodedResult} `) </script> </body> </html> Output: Example 2: HTML <!DOCTYPE html> <html lang="en"> <head> <title>GFG TextEncoder encodeInto() method</title> </head> <body> <p id='javascript' hidden>I Love javascript</p> <button id='btn'>Click me to see results</button> <div id='result'></div> <script type="text/javascript"> // Original string const original = document.querySelector( '#javascript').textContent const btn = document.querySelector('#btn') const result = document.querySelector('#result') // Instance of TextEncoder const encoder = new TextEncoder() // Instance of TextDecoder const decoder = new TextDecoder() // encode() is just an another method // defined in TextEncoder class // It specifies the encoded result of strings const encodedResult = encoder.encode(original) // Decoding const decodedResult = decoder.decode(encodedResult) // Button listing for click event, when // click occurs shows original string and // Encoded and Decode values btn.addEventListener('click', () => { result.innerHTML = ` Original: ${original} Encoded Value: ${encodedResult} Decoded Value: ${decodedResult}` }) </script> </body> </html> Output: Before Clicking the Button: After Clicking the Button: Supported Browsers: Google Chrome 38 and aboveEdge 79 and aboveFirefox 19 and aboveInternet Explorer not supportedOpera 25 and aboveSafari 10.1 and above Comment More infoAdvertise with us Next Article Web API | TextDecoder decode() Method hunter__js Follow Improve Article Tags : JavaScript Web Technologies HTML Web-API Similar Reads JavaScript Tutorial JavaScript is a programming language used to create dynamic content for websites. 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