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 1309664 75280 ?       Ssl   2025 1300:23 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11822544 102664 ?     Ssl   2025 2053:04 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1303048 70932 ?       Ssl   2025 1316:31 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1298588 67360 ?       Ssl   2025 1297:21 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.2 12236236 530120 ?     Ssl   2025 16136:18 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  6.4  3.5 12247216 581364 ?     Ssl   2025 24627:37 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 126096 ?     Ssl   2025 1071:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.4 1101056 65832 ?       Ssl   2025 972:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1101828 66756 ?       Ssl   2025 970:57 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1103080 67732 ?       Ssl   2025 978:39 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.4 1101828 65864 ?       Ssl   2025 973:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1100928 65828 ?       Ssl   2025 970:22 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.4 1167976 67228 ?       Ssl   2025 961:23 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100384 64880 ?       Ssl   2025 957:12 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.6  0.7 11845212 125192 ?     Ssl   2025 1959:34 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101560 65960 ?       Ssl   2025 970:19 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.7 11828572 116112 ?     Ssl  Apr20 1071:12 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.4  0.4 1304012 80632 ?       Ssl  May31 295:54 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1904154  0.6  0.9 11863156 152188 ?     Ssl  Apr25 798:05 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.7  0.8 1177052 132864 ?      Ssl   2025 2933:47 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     2757731  0.3  0.3 1098844 63084 ?       Ssl  04:02   1:56 node /home/sasa/dex8/dex8-worker/starter.js
www-data 2800551  0.0  0.0   2608   592 ?        S    14:04   0:00 sh -c ps -aux | grep node
www-data 2800553  0.0  0.0   3304   712 ?        S    14:04   0:00 grep node
sasa     3168557  0.6  0.6 11832212 109080 ?     Ssl   2025 2267:53 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 84632 ?      Ssl   2025 1854:12 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.7  0.5 1332680 86256 ?       Ssl  Feb21 1477:20 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js