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  0.2 1308832 47724 ?       Ssl   2025 1664:39 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.4 11822128 73552 ?      Ssl   2025 2628:20 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.2 1306520 47124 ?       Ssl   2025 1685:06 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.2 1301856 44684 ?       Ssl   2025 1659:17 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.2 12262100 536868 ?     Ssl   2025 21400:45 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  8.0  4.2 12376912 699984 ?     Ssl   2025 40360:58 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.5 22311168 92012 ?      Ssl   2025 1474:09 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.2 1101824 34684 ?       Ssl   2025 1357:58 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.2 1100804 34372 ?       Ssl   2025 1356:06 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.2 1102312 36312 ?       Ssl   2025 1367:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.2 1102340 35148 ?       Ssl   2025 1360:36 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.2 1102464 36828 ?       Ssl   2025 1355:39 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.2 1165928 34160 ?       Ssl   2025 1347:15 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.2 1102432 35900 ?       Ssl   2025 1340:40 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1216489  0.3  0.2 1101816 34668 ?       Ssl   2025 1356:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.5 11828512 94828 ?      Ssl  Apr20 2135:11 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.6  0.3 1303912 58136 ?       Ssl  May31 1143:30 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1824679  0.4  0.3 11799104 57660 ?      Ssl  Aug15 354:03 node /home/sasa/kriptus/kriptus-panel/server/index.js
sasa     2072475  0.7  0.5 1162424 93740 ?       Ssl  Sep24 144:29 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     2075109 10.1  0.5 11705136 87856 ?      Ssl  Sep24 1909:29 node /home/sasa/dex8/dex8-api/starter.js
sasa     2075416  0.6  0.3 1332152 60212 ?       Ssl  Sep24 121:59 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa     2448036  1.2  0.7 11850924 130972 ?     Ssl  Aug21 828:55 node /home/sasa/miko/miko-hr/server/index.js
sasa     2663246  2.2  0.6 11847136 106288 ?     Ssl  Aug23 1458:02 node /home/sasa/kriptus/kriptus-api/starter.js
sasa     3168557  0.6  0.5 11812564 81920 ?      Ssl   2025 2979:01 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.3 11799488 55264 ?      Ssl   2025 2441:15 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3615181  0.6  0.4 1323296 74268 ?       Ssl  19:31   0:12 node /home/sasa/miko/miko-hr/api/starter.js
www-data 3617555  0.0  0.0   2608   536 ?        S    20:04   0:00 sh -c ps -aux | grep node
www-data 3617557  0.0  0.0   3304   644 ?        S    20:04   0:00 grep node
sasa     3809381  0.3  0.5 22301640 81956 ?      Ssl  Sep02 180:21 node /home/sasa/dex8/dex8-worker/starter.js