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         849  0.5  0.5 1317120 85292 ?       Ssl  Oct08 282:38 node /home/sasa/regoch/regoch-www/server
sasa         880  0.4  0.5 1319240 87864 ?       Ssl  Oct08 235:22 node /home/sasa/dex8/dex8-www/server/index.js
sasa         890  0.5  0.5 11797800 84844 ?      Ssl  Oct08 333:55 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa         903  0.7  0.4 1329652 81848 ?       Ssl  Oct08 430:17 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa         929  0.4  0.4 1300184 68548 ?       Ssl  Oct08 225:55 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa         943  0.4  0.4 1300808 66228 ?       Ssl  Oct08 233:02 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa         980  0.6  0.5 11805104 92048 ?      Ssl  Oct08 364:07 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa         981  0.7  0.6 1148036 104636 ?      Ssl  Oct08 394:29 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1039  0.9  1.4 11941380 242728 ?     Ssl  Oct08 554:32 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa     2044488  0.3  0.4 1298112 66300 ?       Ssl  Nov01  77:00 node /home/sasa/dex8/dex8-panel/server/index.js
sasa     2574087  0.3  0.4 11792920 76896 ?      Ssl  Nov08  41:34 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     2702010  0.4  0.6 22296952 100096 ?     Ssl  Nov10  34:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702011  0.3  0.4 1100276 66476 ?       Ssl  Nov10  30:53 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702018  0.3  0.3 1099884 65240 ?       Ssl  Nov10  30:56 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702019  0.3  0.4 1100516 66764 ?       Ssl  Nov10  30:54 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702046  0.9  0.7 22319628 131144 ?     Ssl  Nov10  83:40 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702047  0.3  0.3 1099492 65180 ?       Ssl  Nov10  31:11 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702088  0.3  0.4 1100008 65864 ?       Ssl  Nov10  30:56 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702089  0.3  0.4 1099752 66964 ?       Ssl  Nov10  30:52 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702137  0.3  0.3 1099864 65556 ?       Ssl  Nov10  30:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa     2702139  0.4  0.6 22297452 101584 ?     Ssl  Nov10  35:13 node /home/sasa/dex8/dex8-worker/starter.js
sasa     3097623  1.2  0.8 11716736 131748 ?     Ssl  Nov13  43:27 node /home/sasa/dex8/dex8-api/starter.js
www-data 3358116  0.0  0.0   2608   608 ?        S    06:46   0:00 sh -c ps -aux | grep node
www-data 3358118  0.0  0.0   3304   660 ?        S    06:46   0:00 grep node