Random access in node.js

问题

Does node.js support writing random access?

I see this package, but it doesn't work (if I write two or more parts, the file is corrupt)

回答1:

fs core library should suffice for that. Here is the list of functions to use:

1. fs.open(path, flags, [mode], callback)
2. fs.write(fd, buffer, offset, length, position, callback)
3. fs.writeSync(fd, buffer, offset, length, position)
4. fs.read(fd, buffer, offset, length, position, callback)
5. fs.readSync(fd, buffer, offset, length, position)

They are analogous to how you would do it in C.

来源：https://stackoverflow.com/questions/24230135/random-access-in-node-js