jQuery获取URL信息有很多方法，但是使用这个插件就非常爽了。
托管地址在：http://github.com/allmarkedup/jQuery-URL-Parser
// 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 $.url同样调用处理喊出
jQuery.URL.Parse源代码如下：
// JQuery URL Parser
// Written by Mark Perkins, mark@allmarkedup.com
// License: http://unlicense.org/ (i.e. do what you want with it!)
jQuery.url = function() {
var segments = {};
var parsed = {};
/**
* Options object. Only the URI and strictMode values can be changed via the setters below.
*/
var options = {
url: window.location, // default URI is the page in which the script is running
strictMode: false, // 'loose' parsing by default
key: ["source", "protocol", "authority", "userInfo", "user", "password", "host", "port", "relative", "path", "directory", "file", "query", "anchor"], // keys available to query
q: {
name: "queryKey",
parser: /(?:^|&)([^&=]*)=?([^&]*)/g
},
parser: {
strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/, //less intuitive, more accurate to the specs
loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/ // 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
};
} ();
