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 73012 ?       Ssl   2025 1163:16 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11820496 106424 ?     Ssl   2025 1837:36 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1307724 74012 ?       Ssl   2025 1179:26 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1297836 66740 ?       Ssl   2025 1161:34 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.3  2.8 12165188 467044 ?     Ssl   2025 14763:58 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  5.6  3.5 12246704 585788 ?     Rsl   2025 19204:38 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 126024 ?     Ssl   2025 920:01 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.3 1101056 65072 ?       Ssl   2025 827:37 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1101316 66980 ?       Ssl   2025 826:01 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1101288 66252 ?       Ssl   2025 832:25 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1101316 65012 ?       Ssl   2025 828:15 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.3 1100416 65476 ?       Ssl   2025 825:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1166184 64900 ?       Ssl   2025 816:07 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.4 1102432 67272 ?       Ssl   2025 812:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.7  0.7 11843932 122752 ?     Ssl   2025 1719:34 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101560 66060 ?       Ssl   2025 825:13 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.7 11822820 120424 ?     Ssl  Apr20 690:16 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.4  0.4 1302080 77008 ?       Ssl  May31 105:13 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1904154  0.6  0.9 11870436 151552 ?     Ssl  Apr25 467:28 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.8  0.8 1176540 132012 ?      Ssl   2025 2633:47 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11834424 109652 ?     Ssl   2025 1962:13 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799176 84668 ?      Ssl   2025 1634:13 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.7  0.5 1333192 86440 ?       Ssl  Feb21 1174:16 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa     3605559  0.3  0.3 1096028 60300 ?       Ssl  04:02   0:07 node /home/sasa/dex8/dex8-worker/starter.js
www-data 3608056  0.0  0.0   2608   524 ?        S    04:38   0:00 sh -c ps -aux | grep node
www-data 3608058  0.0  0.0   3304   648 ?        S    04:38   0:00 grep node