Following is the syntax of the method to copy a node buffer:
buf.copy(targetBuffer[, targetStart][, sourceStart][, sourceEnd])
No return value.
Copies data from a region of this buffer to a region in the target buffer even if the target memory region overlaps with the source.
If undefined the targetStart and sourceStart parameters default to 0 while sourceEnd defaults to buffer.length.
// example/*from ww w . j a v a 2s.co m*/ var buffer1 = Buffer.from('ABC'); // copy a buffer var buffer2 = Buffer.alloc(3); buffer1.copy(buffer2); console.log("buffer2 content: " + buffer2.toString());