Node.js Stream readable.readableEncoding Property

Last Updated : 12 Oct, 2021

The readable.readableEncodin property in a readable Stream is utilized to get the property encoding of a stated readable stream. Moreover, you can set this property using readable.setEncoding() method.

Syntax:

readable.readableEncoding

Return Value: It returns the encoding used in the program.

Below examples illustrate the use of readable.readableEncoding property in Node.js:

Example 1:

// Node.js program to demonstrate the      
// readable.readableEncoding Property   
  
// Include fs module 
const fs = require("fs"); 
  
// Constructing readable stream 
const readable = fs.createReadStream("input.text"); 
  
// Setting the encoding  
readable.setEncoding("base64"); 
  
// Instructions for reading data 
readable.on('readable', () => { 
  let chunk; 
  
  // Using while loop and calling 
  // read method with parameter 
  while (null !== (chunk = readable.read())) { 
  
    // Displaying the chunk 
    console.log(`read: ${chunk}`); 
  } 
}); 
  
// Calling readableEncoding property 
readable.readableEncoding; 

Output:

read: aGVs
read: bG8=

Example 2:

// Node.js program to demonstrate the      
// readable.readableEncoding Property   
  
// Include fs module 
const fs = require("fs"); 
  
// Constructing readable stream 
const readable = fs.createReadStream("input.text"); 
  
// Setting the encoding  
readable.setEncoding("hex"); 
  
// Instructions for reading data 
readable.on('readable', () => { 
  let chunk; 
  
  // Using while loop and calling 
  // read method with parameter 
  while (null !== (chunk = readable.read())) { 
  
    // Displaying the chunk 
    console.log(`read: ${chunk}`); 
  } 
}); 
  
// Calling readableEncoding property 
readable.readableEncoding; 