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  0.5 1304528 85156 ?       Ssl   2025 747:54 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1208  0.3  0.4 1305256 73600 ?       Ssl   2025 543:10 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  0.8  0.7 11827252 117788 ?     Ssl   2025 1227:34 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.6  0.6 11817896 102264 ?     Ssl   2025 858:50 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.8  0.5 1331116 84104 ?       Ssl   2025 1181:15 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.3  0.4 1305688 73924 ?       Ssl   2025 552:18 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1299400 69112 ?       Ssl   2025 542:23 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.4  2.8 12182128 469956 ?     Ssl   2025 6269:22 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  2.9  1.4 11936488 243016 ?     Ssl   2025 4132:43 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa      492181  0.3  0.3 1100380 65268 ?       Ssl  03:02   1:23 node /home/sasa/dex8/dex8-worker/starter.js
www-data  519699  0.0  0.0   2608   592 ?        S    09:41   0:00 sh -c ps -aux | grep node
www-data  519701  0.0  0.0   3304   716 ?        S    09:41   0:00 grep node
sasa     1214480  0.3  0.3 1099656 63544 ?       Ssl   2025 165:42 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.3 1099776 63468 ?       Ssl   2025 166:07 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.3 1100036 65056 ?       Ssl   2025 165:36 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.3 1100264 64248 ?       Ssl   2025 166:49 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1099524 63276 ?       Ssl   2025 165:55 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.3 1099904 64524 ?       Ssl   2025 165:35 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1099880 64040 ?       Ssl   2025 163:01 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100128 63468 ?       Ssl   2025 162:31 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.5  0.7 11704608 118264 ?     Rsl   2025 275:19 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.3 1099768 63876 ?       Ssl   2025 164:46 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2628167  0.9  0.8 1178556 131892 ?      Ssl   2025 1163:25 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.6  0.6 11826628 102800 ?     Ssl   2025 827:16 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11798920 84184 ?      Ssl   2025 640:11 node /home/sasa/@mikosoft/dodo-examples/server/index.js