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         890  0.5  0.5 11797020 84420 ?      Ssl   2024 1532:10 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa         903  0.7  0.5 1331320 84672 ?       Ssl   2024 2172:08 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa         929  0.3  0.4 1302328 70932 ?       Ssl   2024 1024:52 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa         943  0.3  0.4 1303368 69272 ?       Ssl   2024 1003:12 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa         980  0.5  0.6 11817064 100592 ?     Ssl   2024 1648:24 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa         981  0.5  0.6 1153712 108764 ?      Ssl   2024 1702:42 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1039  0.8  1.8 12077400 305708 ?     Ssl   2024 2507:43 node /home/sasa/voovuu/voovuu-pub/server/index.js
www-data 1237192  0.0  0.0   2608   604 ?        S    19:23   0:00 sh -c ps -aux | grep node
www-data 1237194  0.0  0.0   3304   732 ?        S    19:23   0:00 grep node
sasa     1788108  0.4  0.5 11803828 89700 ?      Ssl  Mar16 234:28 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1790865  0.7  0.6 11812704 99364 ?      Ssl  Jan30 868:35 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1791369  0.7  0.8 11789608 139284 ?     Ssl  Jan30 870:09 node /home/sasa/dex8/dex8-api/starter.js
sasa     2044488  0.3  0.4 1300372 69708 ?       Ssl   2024 871:40 node /home/sasa/dex8/dex8-panel/server/index.js
sasa     2574087  0.3  0.4 11795224 79356 ?      Ssl   2024 956:05 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3598766  0.3  0.4 1102940 67508 ?       Ssl   2024 589:02 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598767  0.3  0.4 22281328 81908 ?      Ssl   2024 599:10 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598774  0.3  0.4 1102944 68164 ?       Ssl   2024 591:20 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598775  0.3  0.4 1101664 66472 ?       Ssl   2024 592:47 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598802  0.6  1.0 22350028 178960 ?     Ssl   2024 1083:14 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598803  0.3  0.4 1102688 67660 ?       Ssl   2024 589:21 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598851  0.3  0.4 1102180 67168 ?       Ssl   2024 589:45 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598853  0.3  0.4 1101924 67472 ?       Ssl   2024 589:28 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598925  0.3  0.5 1330176 83244 ?       Ssl   2024 613:48 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3598927  0.3  0.4 1299980 69120 ?       Ssl   2024 590:22 node /home/sasa/dex8/dex8-worker/starter.js