/js/lib/Socket.IO-node/support/expresso/deps/jscoverage/doc/example-jsunit/jsunit/app/jsUnitVersionCheck.js

http://github.com/onedayitwillmake/RealtimeMultiplayerNodeJs · JavaScript · 59 lines · 50 code · 9 blank · 0 comment · 10 complexity · 2ab5c3ad4753f93edfd31638c9044acc MD5 · raw file 

    

  1. var versionRequest;

    2. 

  2. 

    3. 

  3. function isOutOfDate(newVersionNumber) {

    4. 

  4.     return JSUNIT_VERSION < newVersionNumber;

    5. 

  5. }

    6. 

  6. 

    7. 

  7. function sendRequestForLatestVersion(url) {

    8. 

  8.     versionRequest = createXmlHttpRequest();

    9. 

  9.     if (versionRequest) {

    10. 

  10.         versionRequest.onreadystatechange = requestStateChanged;

    11. 

  11.         versionRequest.open("GET", url, true);

    12. 

  12.         versionRequest.send(null);

    13. 

  13.     }

    14. 

  14. }

    15. 

  15. 

    16. 

  16. function createXmlHttpRequest() {

    17. 

  17.     if (window.XMLHttpRequest)

    18. 

  18.         return new XMLHttpRequest();

    19. 

  19.     else if (window.ActiveXObject)

    20. 

  20.         return new ActiveXObject("Microsoft.XMLHTTP");

    21. 

  21. }

    22. 

  22. 

    23. 

  23. function requestStateChanged() {

    24. 

  24.     if (versionRequest && versionRequest.readyState == 4) {

    25. 

  25.         if (versionRequest.status == 200) {

    26. 

  26.             var latestVersion = versionRequest.responseText;

    27. 

  27.             if (isOutOfDate(latestVersion))

    28. 

  28.                 versionNotLatest(latestVersion);

    29. 

  29.             else

    30. 

  30.                 versionLatest();

    31. 

  31.         } else

    32. 

  32.             versionCheckError();

    33. 

  33.     }

    34. 

  34. }

    35. 

  35. 

    36. 

  36. function checkForLatestVersion(url) {

    37. 

  37.     setLatestVersionDivHTML("Checking for newer version...");

    38. 

  38.     try {

    39. 

  39.         sendRequestForLatestVersion(url);

    40. 

  40.     } catch (e) {

    41. 

  41.         setLatestVersionDivHTML("An error occurred while checking for a newer version: " + e.message);

    42. 

  42.     }

    43. 

  43. }

    44. 

  44. 

    45. 

  45. function versionNotLatest(latestVersion) {

    46. 

  46.     setLatestVersionDivHTML('<font color="red">A newer version of JsUnit, version ' + latestVersion + ', is available.</font>');

    47. 

  47. }

    48. 

  48. 

    49. 

  49. function versionLatest() {

    50. 

  50.     setLatestVersionDivHTML("You are running the latest version of JsUnit.");

    51. 

  51. }

    52. 

  52. 

    53. 

  53. function setLatestVersionDivHTML(string) {

    54. 

  54.     document.getElementById("versionCheckDiv").innerHTML = string;

    55. 

  55. }

    56. 

  56. 

    57. 

  57. function versionCheckError() {

    58. 

  58.     setLatestVersionDivHTML("An error occurred while checking for a newer version.");

    59. 

  59. }
    60.