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         914  0.5  0.5 1306452 84536 ?       Ssl  Aug04 339:19 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa         935  0.7  0.8 11786328 132636 ?     Ssl  Aug04 500:57 node /home/sasa/dex8/dex8-api/starter.js
sasa         938  0.4  0.4 1307036 76284 ?       Ssl  Aug04 288:08 node /home/sasa/regoch/regoch-www/server
sasa         945  0.3  0.4 1303752 71588 ?       Ssl  Aug04 245:27 node /home/sasa/dex8/dex8-panel/server/index.js
sasa         947  0.7  0.6 11849120 112592 ?     Ssl  Aug04 500:28 node /home/sasa/dex8/dex8-www/server/index.js
sasa         966  0.5  0.6 11811024 98428 ?      Ssl  Aug04 378:26 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa         980  0.8  0.5 1330216 83664 ?       Ssl  Aug04 519:38 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa         997  0.3  0.4 1303104 71692 ?       Ssl  Aug04 248:10 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1021  0.3  0.3 1297920 65436 ?       Ssl  Aug04 244:31 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1065  0.6  0.6 11832284 110876 ?     Ssl  Aug04 416:52 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa        1074  0.6  0.6 1154896 103956 ?      Ssl  Aug04 406:48 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1136  0.7  1.0 11878052 164544 ?     Ssl  Aug04 472:17 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1148  0.4  0.4 11794644 78424 ?      Ssl  Aug04 270:56 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa        1197  0.3  0.4 1102700 65616 ?       Ssl  Aug04 252:53 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1199  0.4  0.4 22277756 77400 ?      Ssl  Aug04 256:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1308  0.3  0.4 1101920 65944 ?       Ssl  Aug04 252:06 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1325  0.3  0.3 1101920 65476 ?       Ssl  Aug04 251:56 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1393  0.8  0.9 22329444 149884 ?     Ssl  Aug04 513:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1395  0.3  0.3 1102188 65336 ?       Ssl  Aug04 253:04 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1489  0.3  0.3 1101664 64844 ?       Ssl  Aug04 252:59 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1496  0.3  0.4 1102688 66852 ?       Ssl  Aug04 251:45 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.3  0.3 1101920 64820 ?       Ssl  Aug04 252:22 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1608  0.3  0.3 1102176 65360 ?       Ssl  Aug04 251:04 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1686  1.2  5.0 12560508 826248 ?     Ssl  Aug04 832:55 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
www-data  898922  0.0  0.0   2608   600 ?        S    03:39   0:00 sh -c ps -aux | grep node
www-data  898924  0.0  0.0   3304   720 ?        S    03:39   0:00 grep node
sasa     1371685  0.4  0.5 11799612 88204 ?      Ssl  Aug16 207:44 node /home/sasa/mikosoft-info/solar-wind-energy/server/index.js
sasa     1460918  0.4  0.3 1300136 65208 ?       Ssl  Aug17 205:40 node /home/sasa/sites-nodejs/oxygen-free-copper/server.js