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Javascript Class that encodes urls

/ Published in: JavaScript
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I did not, in fact write this script. I found it here:

http://www.webtoolkit.info/javascript-url-decode-encode.html

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  1. var Url = {
  2.  
  3. 	// public method for url encoding
  4. 	encode : function (string) {
  5. 		return escape(this._utf8_encode(string));
  6. 	},
  7.  
  8. 	// public method for url decoding
  9. 	decode : function (string) {
  10. 		return this._utf8_decode(unescape(string));
  11. 	},
  12.  
  13. 	// private method for UTF-8 encoding
  14. 	_utf8_encode : function (string) {
  15. 		string = string.replace(/
  16. /g,"\n");
  17. 		var utftext = "";
  18.  
  19. 		for (var n = 0; n < string.length; n++) {
  20.  
  21. 			var c = string.charCodeAt(n);
  22.  
  23. 			if (c < 128) {
  24. 				utftext += String.fromCharCode(c);
  25. 			}
  26. 			else if((c > 127) && (c < 2048)) {
  27. 				utftext += String.fromCharCode((c >> 6) | 192);
  28. 				utftext += String.fromCharCode((c & 63) | 128);
  29. 			}
  30. 			else {
  31. 				utftext += String.fromCharCode((c >> 12) | 224);
  32. 				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
  33. 				utftext += String.fromCharCode((c & 63) | 128);
  34. 			}
  35.  
  36. 		}
  37.  
  38. 		return utftext;
  39. 	},
  40.  
  41. 	// private method for UTF-8 decoding
  42. 	_utf8_decode : function (utftext) {
  43. 		var string = "";
  44. 		var i = 0;
  45. 		var c = c1 = c2 = 0;
  46.  
  47. 		while ( i < utftext.length ) {
  48.  
  49. 			c = utftext.charCodeAt(i);
  50.  
  51. 			if (c < 128) {
  52. 				string += String.fromCharCode(c);
  53. 				i++;
  54. 			}
  55. 			else if((c > 191) && (c < 224)) {
  56. 				c2 = utftext.charCodeAt(i+1);
  57. 				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
  58. 				i += 2;
  59. 			}
  60. 			else {
  61. 				c2 = utftext.charCodeAt(i+1);
  62. 				c3 = utftext.charCodeAt(i+2);
  63. 				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
  64. 				i += 3;
  65. 			}
  66.  
  67. 		}
  68.  
  69. 		return string;
  70. 	}
  71.  
  72. }

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