//  http: //localhost:19090/home/index?id=1            var source = $.url.attr("source");      //  http://localhost:19090/home/index?id=1            var protocol = $.url.attr("protocol");      //  http    全部可选值http, https, file, etc            var path = $.url.attr("path");          //  /home/index            var host = $.url.attr("host");          //  localhost            var port = $.url.attr("port");          //  19090            var relative = $.url.attr("relative");  //  /home/index?id=1            var directory = $.url.attr("directory");//  /home/index                        //  http://localhost:19090/floder/index.html?id=1            var file = $.url.attr("file");          //  index.html            var query = $.url.attr("query");        //  id = 1  这个还可以调用  .param()                                     var id = $.url.param("id");             //  1;            var segment = $.url.segment(1);        // 0:floder 1:index.html            //也可以指定其他URL            var setUrlAnchor = $.url.setUrl("http://www.baidu.com/#logo").attr("anchor");   //  此时setUrlAnchor与上面示例的 $.url同样调用处理喊出

// JQuery URL Parser// Written by Mark Perkins, mark@allmarkedup.com// License: http://unlicense.org/ (i.e. do what you want with it!)jQuery.url = function() {    var segments = {};    var parsed = {};    /**    * Options object. Only the URI and strictMode values can be changed via the setters below.    */    var options = {        url: window.location, // default URI is the page in which the script is running        strictMode: false, // ‘loose‘ parsing by default        key: ["source", "protocol", "authority", "userInfo", "user", "password", "host", "port", "relative", "path", "directory", "file", "query", "anchor"], // keys available to query         q: {            name: "queryKey",            parser: /(?:^|&)([^&=]*)=?([^&]*)/g        },        parser: {            strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,  //less intuitive, more accurate to the specs            loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/ // more intuitive, fails on relative paths and deviates from specs        }    };    /**    * Deals with the parsing of the URI according to the regex above.    * Written by Steven Levithan - see credits at top.    */    var parseUri = function() {        str = decodeURI(options.url);        var m = options.parser[options.strictMode ? "strict" : "loose"].exec(str);        var uri = {};        var i = 14;        while (i--) {            uri[options.key[i]] = m[i] || "";        }        uri[options.q.name] = {};        uri[options.key[12]].replace(options.q.parser, function($0, $1, $2) {            if ($1) {                uri[options.q.name][$1] = $2;            }        });        return uri;    };    /**    * Returns the value of the passed in key from the parsed URI.    *     * @param string key The key whose value is required    */    var key = function(key) {        if (jQuery.isEmptyObject(parsed)) {            setUp(); // if the URI has not been parsed yet then do this first...            }        if (key == "base") {            if (parsed.port !== null && parsed.port !== "") {                return parsed.protocol + "://" + parsed.host + ":" + parsed.port + "/";            }            else {                return parsed.protocol + "://" + parsed.host + "/";            }        }        return (parsed[key] === "") ? null : parsed[key];    };    /**    * Returns the value of the required query string parameter.    *     * @param string item The parameter whose value is required    */    var param = function(item) {        if (jQuery.isEmptyObject(parsed)) {            setUp(); // if the URI has not been parsed yet then do this first...            }        return (parsed.queryKey[item] === null) ? null : parsed.queryKey[item];    };    /**    * ‘Constructor‘ (not really!) function.    *  Called whenever the URI changes to kick off re-parsing of the URI and splitting it up into segments.     */    var setUp = function() {        parsed = parseUri();        getSegments();    };    /**    * Splits up the body of the URI into segments (i.e. sections delimited by ‘/‘)    */    var getSegments = function() {        var p = parsed.path;        segments = []; // clear out segments array        segments = parsed.path.length == 1 ? {} : (p.charAt(p.length - 1) == "/" ? p.substring(1, p.length - 1) : path = p.substring(1)).split("/");    };    return {        /**        * Sets the parsing mode - either strict or loose. Set to loose by default.        *        * @param string mode The mode to set the parser to. Anything apart from a value of ‘strict‘ will set it to loose!        */        setMode: function(mode) {            options.strictMode = mode == "strict" ? true : false;            return this;        },        /**        * Sets URI to parse if you don‘t want to to parse the current page‘s URI.        * Calling the function with no value for newUri resets it to the current page‘s URI.        *        * @param string newUri The URI to parse.        */        setUrl: function(newUri) {            options.url = newUri === undefined ? window.location : newUri;            setUp();            return this;        },        /**        * Returns the value of the specified URI segment. Segments are numbered from 1 to the number of segments.        * For example the URI http://test.com/about/company/ segment(1) would return ‘about‘.        *        * If no integer is passed into the function it returns the number of segments in the URI.        *        * @param int pos The position of the segment to return. Can be empty.        */        segment: function(pos) {            if (jQuery.isEmptyObject(parsed)) {                setUp(); // if the URI has not been parsed yet then do this first...                }            if (pos === undefined) {                return segments.length;            }            return (segments[pos] === "" || segments[pos] === undefined) ? null : segments[pos];        },        attr: key, // provides public access to private ‘key‘ function - see above        param: param // provides public access to private ‘param‘ function - see above    };} ();