The readable.setEncoding() method in a Readable Stream is used to set the encoding of the data read.
Syntax:
readable.setEncoding( encoding )
Parameters: This method accepts single parameter encoding which holds the encoding type.
Return Value: It returns the data in the encoded form.
Below examples illustrate the use of readable.setEncoding() method in Node.js:
Example 1:
// Node.js program to demonstrate the // readable.setEncoding() method // Include fs module const fs = require('fs');
// Create readable stream const readable = fs.createReadStream("input.txt");
// Calling setEncoding method readable.setEncoding('hex');
// Handling data event readable.on('data', (chunk) => {
console.log(`${chunk}`);
}); // Displays that program // is ended console.log("Program ends!!");
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Output:
Program ends!! 48656c6c6f
Example 2:
// Node.js program to demonstrate the // readable.setEncoding() method // Include fs module const fs = require('fs');
// Create readable stream const readable = fs.createReadStream("input.txt");
// Calling setEncoding method readable.setEncoding('base64');
// Handling data event readable.on('data', (chunk) => {
console.log(`${chunk}`);
}); // Displays that program // is ended console.log("Program ends!!");
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Output:
Program ends!! SGVs bG8=
Reference: https://nodejs.org/api/stream.html#stream_readable_setencoding_encoding