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 75620 ?       Ssl   2025 1352:27 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11821136 99640 ?      Ssl   2025 2134:58 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1304328 71080 ?       Ssl   2025 1369:06 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1301520 70108 ?       Ssl   2025 1349:13 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.1  3.6 12330520 592856 ?     Ssl   2025 16720:29 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  6.6  3.6 12263364 598248 ?     Ssl   2025 26750:07 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 125444 ?     Ssl   2025 1129:15 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.3 1101568 65096 ?       Ssl   2025 1027:44 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.4 1101316 66168 ?       Ssl   2025 1026:17 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.4 1102312 67124 ?       Ssl   2025 1034:26 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1101316 64720 ?       Ssl   2025 1029:00 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1100928 65576 ?       Ssl   2025 1025:38 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1166184 64748 ?       Ssl   2025 1016:45 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100384 65240 ?       Ssl   2025 1012:11 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.7  0.7 11848036 124744 ?     Ssl   2025 2185:17 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.4 1101304 65580 ?       Ssl   2025 1025:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.6 11816796 113424 ?     Ssl  Apr20 1205:17 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.4  0.5 1304776 82796 ?       Ssl  May31 380:17 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1904154  0.6  0.8 11857012 143396 ?     Ssl  Apr25 926:01 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.7  0.8 1176796 131808 ?      Ssl   2025 3051:55 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11830720 107184 ?     Ssl   2025 2368:10 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 84068 ?      Ssl   2025 1937:58 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.7  0.5 1333192 86872 ?       Ssl  Feb21 1593:22 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa     4045488  0.2  0.3 1098840 64244 ?       Ssl  04:02   2:25 node /home/sasa/dex8/dex8-worker/starter.js
www-data 4108451  0.0  0.0   2608   588 ?        S    17:52   0:00 sh -c ps -aux | grep node
www-data 4108453  0.0  0.0   3304   720 ?        S    17:52   0:00 grep node