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  0.4  0.4 1301744 77980 ?       Ssl  Oct24   8:58 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1200  0.5  0.6 11705060 112600 ?     Ssl  Oct24  11:01 node /home/sasa/dex8/dex8-api/starter.js
sasa        1207  0.3  0.3 1297676 65188 ?       Ssl  Oct24   6:37 node /home/sasa/regoch/regoch-www/server
sasa        1208  0.2  0.3 1295416 62304 ?       Ssl  Oct24   6:21 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.6  0.5 11804936 86376 ?      Ssl  Oct24  14:47 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.3  0.4 11797592 81036 ?      Ssl  Oct24   7:00 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.5  0.4 1328700 81308 ?       Ssl  Oct24  11:46 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.2  0.3 1296520 63744 ?       Ssl  Oct24   6:28 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.2  0.3 1293992 60820 ?       Ssl  Oct24   6:18 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1292  0.3  0.5 11818452 90368 ?      Ssl  Oct24   8:07 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa        1361  0.5  0.6 1147680 102268 ?      Ssl  Oct24  12:33 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1363  1.5  0.9 11856848 156224 ?     Ssl  Oct24  34:19 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1441  0.3  0.4 11660104 74728 ?      Ssl  Oct24   6:51 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa        1449  0.3  0.3 1099364 63928 ?       Ssl  Oct24   6:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1528  0.4  0.7 22311980 123120 ?     Ssl  Oct24  10:21 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1529  0.3  0.3 1099364 64032 ?       Ssl  Oct24   6:31 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1606  0.3  0.3 1099364 63436 ?       Ssl  Oct24   6:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.3  0.3 1099364 64060 ?       Ssl  Oct24   6:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1705  0.3  0.3 1099368 64372 ?       Ssl  Oct24   6:32 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1706  0.3  0.3 1099620 64124 ?       Ssl  Oct24   6:33 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1805  0.3  0.3 1099360 64616 ?       Ssl  Oct24   6:33 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1807  0.3  0.3 1099872 63924 ?       Ssl  Oct24   6:32 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1885  0.3  0.3 1099368 64688 ?       Ssl  Oct24   6:35 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1886  0.5  0.6 11811496 107960 ?     Ssl  Oct24  12:46 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
www-data  170974  0.0  0.0   2608   532 ?        S    02:25   0:00 sh -c ps -aux | grep node
www-data  170976  0.0  0.0   3304   708 ?        S    02:25   0:00 grep node