Test JS script file

Selected file: 22var_undefined.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 - 22var_undefined.js ::..

/**
 * undefined value
 */

var name; //not yet defined variable

var type=typeof name;

//browser - string:
//nodeJS - undefined: undefined
console.log(type +': '+ name);
 

..:: NodeJS Console - 22var_undefined.js ::..

$ node 22var_undefined.js 
undefined: undefined

$ps -aux | grep node (list all node processes)
sasa        1194  0.5  0.4 1303644 81480 ?       Ssl  Oct24 134:15 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1200  1.0  0.8 11722424 137952 ?     Ssl  Oct24 242:41 node /home/sasa/dex8/dex8-api/starter.js
sasa        1207  0.4  0.4 1303736 71092 ?       Ssl  Oct24 103:33 node /home/sasa/regoch/regoch-www/server
sasa        1208  0.4  0.4 1304912 72360 ?       Ssl  Oct24  95:41 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  1.0  0.6 11829108 103944 ?     Ssl  Oct24 248:46 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.6  0.5 11810828 94756 ?      Ssl  Oct24 142:39 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.8  0.4 1329104 81872 ?       Ssl  Oct24 185:12 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.4  0.4 1300596 69084 ?       Ssl  Oct24  97:04 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.4  0.4 1297036 65648 ?       Ssl  Oct24  95:50 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  3.0  2.8 12182892 461044 ?     Ssl  Oct24 700:31 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1449  0.4  0.3 1165800 64800 ?       Ssl  Oct24 100:38 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1528  2.0  2.6 22611968 435480 ?     Ssl  Oct24 479:00 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1529  0.4  0.3 1099620 63668 ?       Ssl  Oct24 100:30 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1606  0.4  0.3 1098596 62684 ?       Ssl  Oct24 100:40 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.4  0.3 1099620 63804 ?       Ssl  Oct24 100:22 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1705  0.4  0.3 1099624 64104 ?       Ssl  Oct24 100:04 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1706  0.4  0.3 1099364 63496 ?       Ssl  Oct24 100:12 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1805  0.4  0.3 1100384 64828 ?       Ssl  Oct24 100:13 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1807  0.4  0.4 1102176 65852 ?       Ssl  Oct24  98:12 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1885  0.4  0.4 1101672 66244 ?       Ssl  Oct24  98:21 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1886  1.3  0.8 11833136 132244 ?     Ssl  Oct24 304:49 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     2628167  1.0  0.6 1155072 110088 ?      Ssl  Nov04  75:26 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.8  0.5 11812612 94856 ?      Ssl  Nov06  34:17 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.6  0.5 11797896 82612 ?      Ssl  Nov06  26:33 node /home/sasa/@mikosoft/dodo-examples/server/index.js
www-data 3766028  0.0  0.0   2608   524 ?        S    13:50   0:00 sh -c ps -aux | grep node
www-data 3766030  0.0  0.0   3304   644 ?        S    13:50   0:00 grep node