Test JS script file

Selected file: 23var_empty_string.js
Compare console.log() outputs in browser and NodeJS.
Notice: Open browser's console in FireBUG!

  1. 01var_identifier.js
  2. 03var_data_types.js
  3. 03var_data_types_novar.js
  4. 04var_primitiveToObject.js
  5. 05var_string_object.js
  6. 06var_converting_data_types.js
  7. 10var_local_global_outside_function.js
  8. 12var_local_global_inside_function.js
  9. 13var_local_global_inside_function2.js
  10. 14var_local_global_return.js
  11. 16var_global_browser.js
  12. 16var_global_node.js
  13. 20var_Infinity.js
  14. 21var_NaN.js
  15. 22var_undefined.js
  16. 22var_undefined2.js
  17. 23var_empty_string.js
  18. 23var_null_obj.js

..:: Source code - 23var_empty_string.js ::..

/**
 * defining empty string
 */

name = ''; //empty string
var type=typeof name;

console.log(type +': '+ name); //string: 


if(name==null) console.log('Name is null'); //dont work
else if(name=='') console.log('Name is empty string'); //works
 

..:: NodeJS Console - 23var_empty_string.js ::..

$ node 23var_empty_string.js 
string: 
Name is empty string

$ps -aux | grep node (list all node processes)
sasa        1194  0.5  0.4 1303696 81404 ?       Ssl  Oct24 415:53 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1200  1.0  0.8 11724288 141040 ?     Ssl  Oct24 742:16 node /home/sasa/dex8/dex8-api/starter.js
sasa        1208  0.4  0.4 1304232 73776 ?       Ssl  Oct24 299:41 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  1.0  0.6 11825132 114060 ?     Ssl  Oct24 720:42 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.6  0.6 11813644 100548 ?     Ssl  Oct24 470:53 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.9  0.5 1330860 84112 ?       Ssl  Oct24 633:29 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.4  0.4 1301060 70372 ?       Ssl  Oct24 304:51 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.4  0.4 1298192 66776 ?       Ssl  Oct24 299:42 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  3.4  3.0 12187560 498824 ?     Ssl  Oct24 2422:17 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1449  0.4  0.3 1232360 65172 ?       Ssl  Oct24 315:00 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1528  1.9  2.7 33122384 450688 ?     Ssl  Oct24 1378:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1529  0.4  0.3 1101924 65348 ?       Ssl  Oct24 314:01 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1606  0.4  0.4 1102180 66152 ?       Ssl  Oct24 315:13 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.4  0.4 1102180 65688 ?       Ssl  Oct24 314:08 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1705  0.4  0.4 1102952 67336 ?       Ssl  Oct24 313:58 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1706  0.4  0.3 1101412 65060 ?       Ssl  Oct24 313:25 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1805  0.4  0.4 1168736 67280 ?       Ssl  Oct24 314:23 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1807  0.4  0.4 1102176 66176 ?       Ssl  Oct24 307:10 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1885  0.4  0.3 1101160 64752 ?       Ssl  Oct24 308:41 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1886  2.3  1.0 11861676 164456 ?     Ssl  Oct24 1627:32 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
www-data 2572793  0.0  0.0   2608   592 ?        S    22:46   0:00 sh -c ps -aux | grep node
www-data 2572795  0.0  0.0   3304   720 ?        S    22:46   0:00 grep node
sasa     2628167  1.0  0.7 1174432 130596 ?      Ssl  Nov04 540:58 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.7  0.6 11816652 101080 ?     Ssl  Nov06 403:19 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11798664 83904 ?      Ssl  Nov06 270:15 node /home/sasa/@mikosoft/dodo-examples/server/index.js