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 1311200 74420 ?       Ssl   2025 1378:04 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11820204 99640 ?      Ssl   2025 2176:08 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1308260 74204 ?       Ssl   2025 1395:09 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1301520 69424 ?       Ssl   2025 1374:42 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.4 12309372 573272 ?     Ssl   2025 17287:00 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  6.7  3.6 12263364 597156 ?     Ssl   2025 27748:36 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa      535839  0.2  0.3 1098844 63572 ?       Ssl  04:02   2:27 node /home/sasa/dex8/dex8-worker/starter.js
www-data  600118  0.0  0.0   2608   524 ?        S    17:59   0:00 sh -c ps -aux | grep node
www-data  600120  0.0  0.0   3304   724 ?        S    17:59   0:00 grep node
sasa     1214480  0.3  0.7 22311168 124400 ?     Ssl   2025 1157:38 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1101568 65768 ?       Ssl   2025 1054:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1103108 67328 ?       Ssl   2025 1053:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1102312 66144 ?       Ssl   2025 1061:48 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.4 1102340 65716 ?       Ssl   2025 1056:14 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1101952 66688 ?       Ssl   2025 1052:44 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1165928 64388 ?       Ssl   2025 1043:57 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100384 64156 ?       Ssl   2025 1039:10 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.8  0.7 11846076 121852 ?     Ssl   2025 2693:09 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101816 65580 ?       Ssl   2025 1052:45 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.6 11808740 110848 ?     Ssl  Apr20 1313:48 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.4  0.6 1322544 102608 ?      Ssl  May31 468:53 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1904154  0.6  0.9 11890420 161720 ?     Ssl  Apr25 979:59 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.7  0.8 1175260 131280 ?      Ssl   2025 3125:37 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11816464 104108 ?     Ssl   2025 2417:26 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 83872 ?      Ssl   2025 1979:15 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.6  0.5 1333704 86896 ?       Ssl  Feb21 1649:25 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js