Node.js process on events

#!/usr/bin/env node/*from ww  w .  j  av a 2 s. com*/

// This experiment shows which stdin events are fired
// with a 'data' event handler.

var num = 0;
function logEvent(message) {
  console.log(++num + '. ' + message);
}

console.log(
  "stdin events with 'data' event handler:"
);

process.stdin.on('open',     function () { logEvent('stdin open'); });
process.stdin.on('end',      function () { logEvent('stdin end'); });
process.stdin.on('close',    function () { logEvent('stdin close'); });
process.stdin.on('data',     function () { logEvent('stdin data'); });
process.stdin.on('readable', function () { logEvent('stdin readable'); });