1 (function ($) {
2 function guid(g) {
3 var arr = new Array(); //存放32位数值的数组
4 if (typeof (g) == "string") { //如果构造函数的参数为字符串
5 initializeByString(arr, g);
6 } else {
7 initializeByOther(arr);
8 }
9 //返回一个值，该值指示 Guid 的两个实例是否表示同一个值。
10 this.equals = function (o) {
11 if (o && o.isGuid()) {
12 return this.toString() == o.toString();
13 }
14 else {
15 return false;
16 }
17 }
18 //Guid对象的标记
19 this.isGuid = function () {
20 return /^[0-9a-fA-F]{32}?$|^[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}?$/.test(this);
21 }
22 //返回 Guid 类的此实例值的 String 表示形式。
23 this.toString = function (format) {
24 if (typeof (format) == "string") {
25 if (format == "N" || format == "D" || format == "B" || format == "P") {
26 return toStringWithFormat(arr, format);
27 } else {
28 return toStringWithFormat(arr, "D");
29 }
30 }
31 else {
32 return toStringWithFormat(arr, "D");
33 }
34 }
35 //由字符串加载
36 function initializeByString(arr, g) {
37 g = g.replace(/\{|\(|\)|\}|-/g, "");
38 g = g.toLowerCase();
39 if (g.length != 32 || g.search(/[^0-9,a-f]/i) != -1) {
40 initializeByOther(arr);
41 } else {
42 for (var i = 0; i < g.length; i++) {
43 arr.push(g[i]);
44 }
45 }
46 }
47 //由其他类型加载
48 function initializeByOther(arr) {
49 var i = 32;
50 while (i--) {
51 arr.push("0");
52 }
53 }
54 /*
55 根据所提供的格式说明符，返回此 Guid 实例值的 String 表示形式。
56 N 32 位： xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
57 D 由连字符分隔的 32 位数字 xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
58 B 括在大括号中、由连字符分隔的 32 位数字：{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
59 P 括在圆括号中、由连字符分隔的 32 位数字：(xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)
60 */
61 function toStringWithFormat(arr, format) {
62 switch (format) {
63 case "N":
64 return arr.toString().replace(/,/g, "");
65 case "D":
66 var str = arr.slice(0, 8) + "-" + arr.slice(8, 12) + "-" + arr.slice(12, 16) + "-" + arr.slice(16, 20) + "-" + arr.slice(20, 32);
67 str = str.replace(/,/g, "");
68 return str;
69 case "B":
70 var str = toStringWithFormat(arr, "D");
71 str = "{" + str + "}";
72 return str;
73 case "P":
74 var str = toStringWithFormat(arr, "D");
75 str = "(" + str + ")";
76 return str;
77 default:
78 return new Guid();
79 }
80 }
81 }
82 $.extend({ guidEx: guid });
83 $.extend($.guidEx, {
84 enpty: function () {
85 return new guid();
86 },
87 newGuid: function () {
88 var g = "";
89 var i = 32;
90 while (i--) {
91 g += Math.floor(Math.random() * 16.0).toString(16);
92 }
93 return new guid(g);
94 },
95 isGuid: function (g) {
96 return /^[0-9a-fA-F]{32}?$|^[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}?$/.test(g);
97 }
98 });
99 })(jQuery);
