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 1320640 78868 ?       Ssl   2025 1418:24 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11822724 99456 ?      Ssl   2025 2239:41 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1309796 73784 ?       Ssl   2025 1435:46 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1301776 69436 ?       Ssl   2025 1414:35 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.6 12312768 603012 ?     Ssl   2025 18002:19 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  6.9  3.6 12270880 605712 ?     Ssl   2025 29299:16 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 124488 ?     Ssl   2025 1202:00 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.3 1101824 65240 ?       Ssl   2025 1097:25 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.3 1100804 65332 ?       Ssl   2025 1095:50 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1102312 66296 ?       Ssl   2025 1104:41 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1102340 65516 ?       Ssl   2025 1098:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1101952 66644 ?       Ssl   2025 1095:09 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.4 1169000 66968 ?       Ssl   2025 1086:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1099872 64376 ?       Ssl   2025 1081:22 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.8  0.7 11845564 122372 ?     Ssl   2025 2763:51 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101560 65692 ?       Ssl   2025 1095:20 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.7 11831084 118928 ?     Ssl  Apr20 1428:42 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1463481  0.3  0.5 22291832 98272 ?      Ssl  Aug12   8:02 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1631573  0.4  0.6 1322388 100324 ?      Ssl  May31 525:04 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
www-data 1638095  0.0  0.0   2608   596 ?        S    20:15   0:00 sh -c ps -aux | grep node
www-data 1638097  0.0  0.0   3304   712 ?        S    20:15   0:00 grep node
sasa     1904154  0.6  1.0 11893100 165408 ?     Ssl  Apr25 1095:12 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.7  0.7 1176028 130884 ?      Ssl   2025 3226:41 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11830572 106072 ?     Ssl   2025 2492:07 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 82996 ?      Ssl   2025 2044:01 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.6  0.5 1332936 85388 ?       Ssl  Feb21 1737:01 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js