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 1310176 75160 ?       Ssl   2025 1390:46 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11825540 103692 ?     Ssl   2025 2196:21 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1307492 74680 ?       Ssl   2025 1408:10 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1301520 69916 ?       Ssl   2025 1387:23 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.8 12355368 626624 ?     Ssl   2025 17500:28 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  6.8  3.6 12264644 599012 ?     Ssl   2025 28240:02 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa      766360  0.3  0.5 22291940 97000 ?      Ssl  Aug06   7:20 node /home/sasa/dex8/dex8-worker/starter.js
www-data  954231  0.0  0.0   2608   524 ?        S    18:19   0:00 sh -c ps -aux | grep node
www-data  954233  0.0  0.0   3304   660 ?        S    18:19   0:00 grep node
sasa     1214480  0.3  0.7 22311168 124724 ?     Ssl   2025 1171:46 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1102336 66212 ?       Ssl   2025 1068:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1100804 65804 ?       Ssl   2025 1066:54 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1102312 65660 ?       Ssl   2025 1075:26 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1102084 65388 ?       Ssl   2025 1069:47 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1102208 65976 ?       Ssl   2025 1066:16 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1166184 65184 ?       Ssl   2025 1057:30 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100128 63696 ?       Ssl   2025 1052:36 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.8  0.7 11846844 123544 ?     Ssl   2025 2715:38 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.3 1101560 64656 ?       Ssl   2025 1066:18 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.7 11828444 115408 ?     Ssl  Apr20 1348:58 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.4  0.6 1322748 101660 ?      Ssl  May31 486:44 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1904154  0.6  0.9 11856084 157868 ?     Ssl  Apr25 1023:24 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.7  0.7 1175004 129944 ?      Ssl   2025 3157:43 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11811000 100588 ?     Ssl   2025 2440:21 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 83572 ?      Ssl   2025 1999:48 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.6  0.5 1333960 87688 ?       Ssl  Feb21 1677:15 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js