Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
TextDecoder and TextEncoder in Javascript?
TextEncoder is used to convert a given string to utf-8 standard. It retunes an Uint8Array from the string.
TextDecoder is used to covert a stream of bytes into a stream of code points. It can decode UTF-8 , ISO-8859-2, KOI8-R, GBK etc.
Following is the code for TextDecoder and TextEncoder in JavaScript −
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.result,.sample {
font-size: 18px;
font-weight: 500;
color: rebeccapurple;
}
.result {
color: red;
}
</style>
</head>
<body>
<h1>TextDecoder and TextEncoder in Javascript</h1>
<div class="sample"></div>
<button class="Btn">ENCODE STRING</button>
<div class="result"></div>
<h3>Click on the above button to encode the above string</h3>
<div class="sample"></div>
<button class="Btn">Decode STRING</button>
<div class="result"></div>
<h3>Click on the above button to decode the above string</h3>
<script>
let BtnEle = document.querySelectorAll(".Btn");
let sampleEle = document.querySelectorAll(".sample");
let resEle = document.querySelectorAll(".result");
let str = "Hello world";
let str1 = new Uint8Array([119, 111, 114, 108, 100]);
sampleEle[0].innerHTML = str;
sampleEle[1].innerHTML = str1;
BtnEle[0].addEventListener("click", () => {
let textEncoder = new TextEncoder();
resEle[0].innerHTML += "Encoded String = " + textEncoder.encode(str) + "<br>";
});
BtnEle[1].addEventListener("click", () => {
let textDecoder = new TextDecoder();
resEle[1].innerHTML += "Decoded String = " + textDecoder.decode(str1) + "<br>";
});
</script>
</body>
</html>Output
The above code will produce the following output −
On clicking the ‘ENCODE STRING’ button −
On clicking the ‘Decode STRING’ button −
Updated on: 17-Jul-2020
456 Views
Advertisements