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         914  0.4  0.5 1306800 84460 ?       Ssl  Aug04 236:18 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa         935  0.6  0.8 11787352 132976 ?     Ssl  Aug04 353:01 node /home/sasa/dex8/dex8-api/starter.js
sasa         938  0.3  0.4 1305820 74740 ?       Ssl  Aug04 195:23 node /home/sasa/regoch/regoch-www/server
sasa         945  0.3  0.4 1303752 70664 ?       Ssl  Aug04 171:53 node /home/sasa/dex8/dex8-panel/server/index.js
sasa         947  0.6  0.7 11830712 118432 ?     Ssl  Aug04 355:19 node /home/sasa/dex8/dex8-www/server/index.js
sasa         966  0.5  0.6 11809488 99500 ?      Ssl  Aug04 262:07 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa         980  0.6  0.5 1330076 83356 ?       Ssl  Aug04 348:40 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa         997  0.3  0.4 1301280 69696 ?       Ssl  Aug04 173:27 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1021  0.3  0.4 1297448 65560 ?       Ssl  Aug04 171:02 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1065  0.5  0.6 11825120 98980 ?      Ssl  Aug04 292:00 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa        1074  0.5  0.6 1151232 104752 ?      Ssl  Aug04 282:26 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1136  0.6  1.0 11870372 171848 ?     Ssl  Aug04 327:45 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1148  0.3  0.4 11794644 77744 ?      Ssl  Aug04 188:48 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa        1197  0.3  0.3 1100908 64476 ?       Ssl  Aug04 177:01 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1199  0.3  0.4 22277756 77676 ?      Ssl  Aug04 178:36 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1308  0.3  0.3 1100128 64324 ?       Ssl  Aug04 176:23 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1325  0.3  0.3 1100128 63604 ?       Ssl  Aug04 176:29 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1393  0.7  0.8 22318804 137728 ?     Ssl  Aug04 369:20 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1395  0.3  0.3 1100908 64132 ?       Ssl  Aug04 176:58 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1489  0.3  0.3 1100128 63780 ?       Ssl  Aug04 177:02 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1496  0.3  0.4 1100896 65856 ?       Ssl  Aug04 176:11 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.3  0.3 1100384 64692 ?       Ssl  Aug04 176:33 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1608  0.3  0.3 1100128 63508 ?       Ssl  Aug04 175:32 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1686  0.8  0.8 11842792 145836 ?     Ssl  Aug04 418:49 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1371685  0.3  0.5 11798184 84428 ?      Ssl  Aug16 127:12 node /home/sasa/mikosoft-info/solar-wind-energy/server/index.js
sasa     1460918  0.3  0.4 1299880 65776 ?       Ssl  Aug17 123:38 node /home/sasa/sites-nodejs/oxygen-free-copper/server.js
www-data 4012927  0.0  0.0   2608   596 ?        S    04:14   0:00 sh -c ps -aux | grep node
www-data 4012929  0.0  0.0   3304   648 ?        S    04:14   0:00 grep node