1 var parseUrl = (function () { 2 function f(g) { 3 return !isNaN(parseFloat(g)) && isFinite(g) 4 } return function (t, h) { 5 var g = h || window.location.toString(); 6 if (!t) { 7 return g 8 } else { 9 t = t.toString() 10 } 11 12 if (g.substring(0, 2) === "//") { 13 g = "http:" + g 14 } else { 15 if (g.split("://").length === 1) { 16 g = "http://" + g 17 } 18 } 19 h = g.split("/"); 20 var l = { auth: "" }, s = h[2].split("@"); 21 if (s.length === 1) { 22 s = s[0].split(":") 23 } else { 24 l.auth = s[0]; s = s[1].split(":") 25 } 26 27 l.protocol = h[0]; 28 l.hostname = s[0]; 29 l.port = (s[1] || ((l.protocol.split(":")[0].toLowerCase() === "https") ? "443" : "80")); 30 l.pathname = ((h.length > 3 ? "/" : "") + h.slice(3, h.length).join("/").split("?")[0].split("#")[0]); 31 var j = l.pathname; 32 if (j.charAt(j.length - 1) === "/") { 33 j = j.substring(0, j.length - 1) 34 } 35 36 var o = l.hostname, p = o.split("."), q = j.split("/"); 37 if (t === "hostname") { 38 return o 39 } else { 40 if (t === "domain") { 41 if (/^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]).){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/.test(o)) { 42 return o 43 } return p.slice(-2).join(".") 44 } else { 45 if (t === "sub") { 46 return p.slice(0, p.length - 2).join(".") 47 } 48 else { 49 if (t === "port") { 50 return l.port 51 } 52 else { 53 if (t === "protocol") { 54 return l.protocol.split(":")[0] 55 } 56 else { 57 if (t === "auth") { 58 return l.auth 59 } 60 else { 61 if (t === "user") { 62 return l.auth.split(":")[0] 63 } else { 64 if (t === "pass") { 65 return l.auth.split(":")[1] || "" 66 } else { 67 if (t === "path") { 68 return l.pathname 69 } 70 else { 71 if (t.charAt(0) === ".") { 72 t = t.substring(1); 73 if (f(t)) { 74 t = parseInt(t, 10); 75 return p[t < 0 ? p.length + t : t - 1] || "" 76 } 77 } 78 else { 79 if (f(t)) { 80 t = parseInt(t, 10); 81 return q[t < 0 ? q.length + t : t] || "" 82 } 83 else { 84 if (t === "file") { 85 return q.slice(-1)[0] 86 } else { 87 if (t === "filename") { 88 return q.slice(-1)[0].split(".")[0] 89 } else { 90 if (t === "fileext") { 91 return q.slice(-1)[0].split(".")[1] || "" 92 } else { 93 if (t.charAt(0) === "?" || t.charAt(0) === "#") { 94 var m = g, k = null; 95 if (t.charAt(0) === "?") { 96 m = (m.split("?")[1] || "").split("#")[0] 97 } else { 98 if (t.charAt(0) === "#") { 99 m = (m.split("#")[1] || "") 100 } 101 } 102 if (!t.charAt(1)) { return m } 103 t = t.substring(1); 104 m = m.split("&"); 105 for (var n = 0, r = m.length; n < r; n++) { 106 k = m[n].split("="); 107 if (k[0] === t) { 108 return k[1] || "" 109 } 110 } 111 return null 112 } 113 } 114 } 115 } 116 } 117 } 118 } 119 } 120 } 121 } 122 } 123 } 124 } 125 } 126 } return "" 127 } 128 })();
调用方式举例：
parseUrl("?t", "http://a.test.com/bb/cc/test.aspx?username=userA&t=123#aabbcc=1234");//返回userA
parseUrl("?", "http://a.test.com/bb/cc/test.aspx?username=userA&t=123#aabbcc=1234");//返回username=userA&t=123
parseUrl("domain", "http://a.test.com/bb/cc/test.aspx?username=userA&t=123#aabbcc=1234");//返回test.com
parseUrl("sub", "http://a.test.com/bb/cc/test.aspx?username=userA&t=123#aabbcc=1234");//返回a
// 其它举例可以参考代码