Test JS script file

Selected file: fs-async.js
Compare console.log() outputs in browser and NodeJS.
Notice: Open browser's console in FireBUG!

  1. 05define_functions.js
  2. 10module_basic1.js
  3. 10module_basic2.js
  4. 10module_basic3.js
  5. 11module_nesting.js
  6. file.js
  7. fs-async.js
  8. fs-async2.js
  9. fs-async3.js
  10. fs-sync.js
  11. fs-sync2.js
  12. http.js
  13. index.html
  14. index.js
  15. my_modules
  16. net.js
  17. npm-debug.log
  18. package.json
  19. promises
  20. socket.js
  21. sys.js
  22. testfiles

..:: Source code - fs-async.js ::..

/*
This example shows asynchronous execution, non-blocking code.
console.log(contents); blocks process and that's why
console.log('Do something else!'); must wait

Successfully loads files up to 1000MB.
 */

//load modules
var fs = require('fs');

//asynchronous file reading
fs.readFile('./testfiles/largefile1000mb.txt', function(err, content){
	console.log(content);
});

//here process is not blocked. While file is loading the next console.log(); continue with execution

console.log('Do something else!');

/*
Conclusion: Due to asynchronous execution, first appear 'Do something else' then is file dumped.
 */
 

..:: NodeJS Console - fs-async.js ::..

$ node fs-async.js 
Do something else!
undefined

$ps -aux | grep node (list all node processes)
sasa        1208  0.3  0.4 1305000 72532 ?       Ssl   2025 1176:42 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11821140 104412 ?     Ssl   2025 1859:07 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1303048 70872 ?       Ssl   2025 1192:54 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1297836 66684 ?       Ssl   2025 1174:53 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.3  2.7 12147068 445360 ?     Ssl   2025 14958:28 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  5.7  3.5 12247984 586628 ?     Ssl   2025 19749:31 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 125612 ?     Ssl   2025 934:55 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1101568 65696 ?       Ssl   2025 841:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1102596 67792 ?       Ssl   2025 840:17 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1102312 66452 ?       Ssl   2025 846:48 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1101316 64424 ?       Ssl   2025 842:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1101184 65864 ?       Ssl   2025 839:50 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1166440 64944 ?       Ssl   2025 830:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1099872 64468 ?       Ssl   2025 827:04 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.6  0.7 11844444 125024 ?     Ssl   2025 1743:08 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101560 65988 ?       Ssl   2025 839:31 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.7 11819868 116572 ?     Ssl  Apr20 722:53 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.4  0.4 1302812 79360 ?       Ssl  May31 123:56 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1904154  0.6  0.8 11864388 146176 ?     Ssl  Apr25 492:00 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.8  0.8 1177308 132056 ?      Ssl   2025 2664:22 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11834168 108992 ?     Ssl   2025 1988:55 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 84112 ?      Ssl   2025 1655:50 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.7  0.5 1359304 83548 ?       Ssl  Feb21 1204:33 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa     3809836  0.3  0.5 22307132 96116 ?      Ssl  Jun19   4:57 node /home/sasa/dex8/dex8-worker/starter.js
www-data 3932953  0.0  0.0   2608   596 ?        S    05:04   0:00 sh -c ps -aux | grep node
www-data 3932955  0.0  0.0   3304   716 ?        S    05:04   0:00 grep node