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Browser Checker

/ Published in: JavaScript
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Support: Fx2, Opera9, IE6
I don't have warrant of Safari's run and NN4. However, I think that this code is perhaps safe.

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Copy this code and paste it in your HTML 
  1. /*-----------------------------------------------------------------------------
  2.  * Navigator
  3.  *  Example Source
  4. 	document.write(
  5. 		(Navigator.isWinIE())  ? 'IE' + Navigator.isWinIE() + ' (Win)' :
  6. 		(Navigator.isMacIE())  ? 'IE' + Navigator.isMacIE() + ' (Mac)' :
  7. 		(Navigator.isGecko())  ? 'Mozilla (' + Navigator.isGecko() + ')' :
  8. 		(Navigator.isSafari()) ? 'Safari (' + Navigator.isSafari() + ')' :
  9. 		(Navigator.isKDE())    ? 'KDE (' + Navigator.isKDE() + ')' :
  10. 		(Navigator.isOpera())  ? 'Opera' + Navigator.isOpera() :
  11. 		(Navigator.isNN4())    ? 'NN4' :
  12. 		"I don't know."
  13. 	);
  14.  *-------------------------------------------------------------------------- */
  15.  
  16. var Navigator = {
  17. 	_getVersion: function (a, b) {
  18. 		var t = navigator.userAgent.split(a)[1];
  19. 		return (t) ? t.split(b)[0] : false;
  20. 	},
  21. 	isOpera: function () {
  22. 		return (
  23. 			(window.opera) ?
  24. 				(document.createElementNS) ?
  25. 					(document.createCDATASection) ?
  26. 						(document.styleSheets) ? 9 : 8
  27. 					: 7
  28. 				: 6
  29. 			: false
  30. 		);
  31. 	},
  32. 	isSafari: function () {
  33. 		return (document.createCDATASection && document.createElementNS) ? Navigator._getVersion('AppleWebKit/', '(') : false;
  34. 	},
  35. 	isKDE: function () {
  36. 		return (document.createCDATASection && document.createElementNS) ? Navigator._getVersion('Konqueror/', ';') : false;
  37. 	},
  38. 	isGecko: function () {
  39. 		return (document.createCDATASection && document.createElementNS) ? Navigator._getVersion('Gecko/', ' ') : false;
  40. 	},
  41. 	isNN4: function () {
  42. 		return (document.layers && typeof document.layers == 'object') ? true : false;
  43. 	},
  44. 	isWinIE: function () {
  45. 		return (
  46. 			/*@cc_on @if (@_win64 || @_win32 || @_win16)
  47. 			(document.getElementsByTagName) ?
  48. 				(@_jscript_version > 5.6) ? 7 :
  49. 				(@_jscript_version == 5.6) ? 6 :
  50. 				(@_jscript_version == 5.5) ? 5.5 :
  51. 				5
  52. 			: 4
  53. 			@else@*/false/*@end @*/
  54. 		);
  55. 	},
  56. 	isMacIE: function () {
  57. 		return (
  58. 			/*@cc_on @if (@_mac && (@_PowerPC || @_mc680x0))
  59. 				(document.getElementsByTagName) ? 5 : 4
  60. 			@else@*/false/*@end @*/
  61. 		);
  62. 	}
  63. };

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