Get your own website
var buf1 = Buffer.from('a');
var buf2 = Buffer.from('b');
var buf3 = Buffer.from('c');
var arr = [buf1, buf2, buf3];

//Join the array into one buffer object:
var buf = Buffer.concat(arr);
console.log(buf);

              
<Buffer 61>, <Buffer 62>, <Buffer 63>