Node.js Buffer Read

Introduction

Following is the syntax of the method to read data from a Node Buffer: 

buf.toString([encoding][, start][, end])

This method decodes and returns a string from buffer data encoded using the specified character set encoding. 

// example/*from   ww  w .j  a  v  a 2  s  . c  o m*/
var buf = Buffer.alloc(26);
for (var i = 0 ; i < 26 ; i++) {
  buf[i] = i + 97;
}

console.log( buf.toString('ascii'));       // outputs: abcdefghijklmnopqrstuvwxyz
console.log( buf.toString('ascii',0,5));   // outputs: abcde
console.log( buf.toString('utf8',0,5));    // outputs: abcde
console.log( buf.toString(undefined,0,5)); // encoding defaults to 'utf8', outputs abcde



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