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 1319136 78284 ?       Ssl   2025 1286:41 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11821364 102612 ?     Ssl   2025 2031:25 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1304584 71980 ?       Ssl   2025 1302:44 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1298028 66952 ?       Ssl   2025 1283:40 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.1 12227888 517220 ?     Ssl   2025 16023:48 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  6.3  3.5 12247216 580768 ?     Ssl   2025 24050:41 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 125076 ?     Ssl   2025 1056:05 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1101568 66132 ?       Ssl   2025 957:51 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1101060 66188 ?       Ssl   2025 956:19 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1101032 65664 ?       Ssl   2025 963:54 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1101316 64792 ?       Ssl   2025 958:50 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1100672 65912 ?       Ssl   2025 955:45 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1166184 65252 ?       Ssl   2025 946:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100384 65136 ?       Ssl   2025 942:37 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.6  0.7 11844700 124968 ?     Ssl   2025 1935:22 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101816 65772 ?       Ssl   2025 955:40 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.7 11829084 116928 ?     Ssl  Apr20 1034:31 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.4  0.4 1303492 80752 ?       Ssl  May31 276:39 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1904154  0.6  0.8 11873444 142912 ?     Ssl  Apr25 717:53 node /home/sasa/miko/miko-hr/server/index.js
sasa     2322038  0.3  0.6 22306912 100712 ?     Ssl  Jul13   6:28 node /home/sasa/dex8/dex8-worker/starter.js
www-data 2474753  0.0  0.0   2608   588 ?        S    12:28   0:00 sh -c ps -aux | grep node
www-data 2474755  0.0  0.0   3304   712 ?        S    12:28   0:00 grep node
sasa     2628167  0.8  0.7 1176540 130768 ?      Ssl   2025 2904:41 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.5 11805888 95464 ?      Ssl   2025 2210:58 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 84044 ?      Ssl   2025 1832:09 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.7  0.5 1332680 87216 ?       Ssl  Feb21 1445:54 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js