Test JS script file

Selected file: 019number_negative_zero.js
Compare console.log() outputs in browser and NodeJS.
Notice: Open browser's console in FireBUG!

  1. 001syntax_unicode.js
  2. 010number_DecToHex.js
  3. 011number_HexToDec.js
  4. 012number_toExponential.js
  5. 013number_modulo.js
  6. 014number_division_by_zero.js
  7. 015number_NaN.js
  8. 016number_infinity.js
  9. 017number_isFinite.js
  10. 018number_isNaN.js
  11. 019number_negative_zero.js
  12. 020number_float_rounding_error.js
  13. 030string_htmlTags.js
  14. 030string_multiline.js
  15. 031string_length.js
  16. 032string_concatenate.js
  17. 032string_concatenate2.js
  18. 033string_minus.js
  19. 035stringmethods_charAt.js
  20. 035stringmethods_concate.js
  21. 035stringmethods_indexOf.js
  22. 035stringmethods_match.js
  23. 035stringmethods_match_memory.js
  24. 035stringmethods_replace.js
  25. 035stringmethods_search.js
  26. 035stringmethods_split.js
  27. 035stringmethods_toString.js
  28. 035stringmethods_toUpperCase.js
  29. 035stringmethods_trim.js
  30. 036string_regexTest.js
  31. 040bool_falsy.js
  32. 040bool_truthy.js
  33. 041bool_comparison.js
  34. 042bool_conditional_operator.js
  35. 043bool_logic_operators.js
  36. 044bool_not_exe_function.js
  37. 050null_typeof.js
  38. 051null_comparison.js
  39. 053undefined_var.js
  40. 054ReferenceError.js
  41. 055global_object_browser.js
  42. 055global_object_node.js
  43. 056global_properties_browser.js
  44. 056global_properties_node.js
  45. 057wrapper_object.js
  46. 058wrapper_object_readonly.js
  47. 60object_reference.js

..:: Source code - 019number_negative_zero.js ::..

/**
 * UNDERFLOW
 * Negative zero occurs when the number is less then ±5 × 10−324
 */

var y = -2e-324;

console.log(typeof y); //number
console.log(y); //-0 in browser, 0 in NodeJS
 

..:: NodeJS Console - 019number_negative_zero.js ::..

$ node 019number_negative_zero.js 
number
-0

$ps -aux | grep node (list all node processes)
sasa        1208  0.3  0.2 1309856 48168 ?       Ssl   2025 1687:14 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.4 11822908 73380 ?      Ssl   2025 2664:19 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.2 1306264 45848 ?       Ssl   2025 1707:59 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.2 1301856 42140 ?       Ssl   2025 1681:53 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.2 12273508 532996 ?     Ssl   2025 21606:30 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  8.1  4.2 12377168 696528 ?     Ssl   2025 41534:08 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.5 22311168 91280 ?      Ssl   2025 1499:16 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.2 1101568 34160 ?       Ssl   2025 1382:02 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.2 1100804 34252 ?       Ssl   2025 1380:07 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.2 1102312 36276 ?       Ssl   2025 1391:39 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.2 1102340 34540 ?       Ssl   2025 1384:42 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.2 1102464 35616 ?       Ssl   2025 1379:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.2 1166440 33312 ?       Ssl   2025 1371:16 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.2 1102176 34372 ?       Ssl   2025 1364:36 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1216489  0.3  0.2 1101816 34104 ?       Ssl   2025 1380:35 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.5 11809568 85676 ?      Ssl  Apr20 2197:55 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.6  0.3 1304096 57076 ?       Ssl  May31 1222:03 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1824679  0.4  0.3 11799104 55360 ?      Ssl  Aug15 388:16 node /home/sasa/kriptus/kriptus-panel/server/index.js
sasa     2072475  0.7  0.5 1161564 90508 ?       Ssl  Sep24 193:28 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     2075109  9.0  0.5 11720288 92772 ?      Ssl  Sep24 2350:21 node /home/sasa/dex8/dex8-api/starter.js
sasa     2075416  0.6  0.3 1345360 56704 ?       Ssl  Sep24 170:39 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa     2448036  1.1  0.8 11861968 137128 ?     Ssl  Aug21 897:10 node /home/sasa/miko/miko-hr/server/index.js
sasa     2663246  2.2  0.6 11846316 101524 ?     Ssl  Aug23 1605:53 node /home/sasa/kriptus/kriptus-api/starter.js
sasa     3168557  0.6  0.4 11832788 77676 ?      Ssl   2025 3021:51 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.3 11799488 54128 ?      Ssl   2025 2477:59 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3615181  0.6  0.3 1331764 64480 ?       Ssl  Oct07  46:02 node /home/sasa/miko/miko-hr/api/starter.js
sasa     3809381  0.3  0.4 22302152 78540 ?      Ssl  Sep02 207:21 node /home/sasa/dex8/dex8-worker/starter.js
www-data 4167250  0.0  0.0   2608   536 ?        S    22:02   0:00 sh -c ps -aux | grep node
www-data 4167252  0.0  0.0   3304   708 ?        S    22:02   0:00 grep node