js/jquery 获取url参数
js代码：
function GetQueryString(name)
{
var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
var r = window.location.search.substr(1).match(reg);
if (r!=null) return unescape(r[2]); return null;
}
URL的参数&参数名1=XXXX&参数名2=XXXX&参数名3=XXXX
alert(GetQueryString("参数名1"));
alert(GetQueryString("参数名2"));
alert(GetQueryString("参数名3"));
jquery 代码：
把下面代码。放到js文件中
/** * jQuery.query - Query String Modification and Creation for jQuery * Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com) * Licensed under the WTFPL (http://sam.zoy.org/wtfpl/). * Date: 2009/8/13 * * @author Blair Mitchelmore * @version 2.1.6 * **/ new function(settings) { // Various Settings var $separator = settings.separator || '&'; var $spaces = settings.spaces === false ? false : true; var $suffix = settings.suffix === false ? '' : '[]'; var $prefix = settings.prefix === false ? false : true; var $hash = $prefix ? settings.hash === true ? "#" : "?" : ""; var $numbers = settings.numbers === false ? false : true; jQuery.query = new function() { var is = function(o, t) { return o != undefined && o !== null && (!!t ? o.constructor == t : true); }; var parse = function(path) { var m, rx = /\[([^[]*)\]/g, match = /^([^[]+?)(\[.*\])?$/.exec(path), base = match[1], tokens = []; while (m = rx.exec(match[2])) tokens.push(m[1]); return [base, tokens]; }; var set = function(target, tokens, value) { var o, token = tokens.shift(); if (typeof target != 'object') target = null; if (token === "") { if (!target) target = []; if (is(target, Array)) { target.push(tokens.length == 0 ? value : set(null, tokens.slice(0), value)); } else if (is(target, Object)) { var i = 0; while (target[i++] != null); target[--i] = tokens.length == 0 ? value : set(target[i], tokens.slice(0), value); } else { target = []; target.push(tokens.length == 0 ? value : set(null, tokens.slice(0), value)); } } else if (token && token.match(/^\s*[0-9]+\s*$/)) { var index = parseInt(token, 10); if (!target) target = []; target[index] = tokens.length == 0 ? value : set(target[index], tokens.slice(0), value); } else if (token) { var index = token.replace(/^\s*|\s*$/g, ""); if (!target) target = {}; if (is(target, Array)) { var temp = {}; for (var i = 0; i < target.length; ++i) { temp[i] = target[i]; } target = temp; } target[index] = tokens.length == 0 ? value : set(target[index], tokens.slice(0), value); } else { return value; } return target; }; var queryObject = function(a) { var self = this; self.keys = {}; if (a.queryObject) { jQuery.each(a.get(), function(key, val) { self.SET(key, val); }); } else { jQuery.each(arguments, function() { var q = "" + this; q = q.replace(/^[?#]/,''); // remove any leading ? || # q = q.replace(/[;&]$/,''); // remove any trailing & || ; if ($spaces) q = q.replace(/[+]/g,' '); // replace +'s with spaces jQuery.each(q.split(/[&;]/), function(){ var key = decodeURIComponent(this.split('=')[0] || ""); var val = decodeURIComponent(this.split('=')[1] || ""); if (!key) return; if ($numbers) { if (/^[+-]?[0-9]+\.[0-9]*$/.test(val)) // simple float regex val = parseFloat(val); else if (/^[+-]?[0-9]+$/.test(val)) // simple int regex val = parseInt(val, 10); } val = (!val && val !== 0) ? true : val; if (val !== false && val !== true && typeof val != 'number') val = val; self.SET(key, val); }); }); } return self; }; queryObject.prototype = { queryObject: true, has: function(key, type) { var value = this.get(key); return is(value, type); }, GET: function(key) { if (!is(key)) return this.keys; var parsed = parse(key), base = parsed[0], tokens = parsed[1]; var target = this.keys[base]; while (target != null && tokens.length != 0) { target = target[tokens.shift()]; } return typeof target == 'number' ? target : target || ""; }, get: function(key) { var target = this.GET(key); if (is(target, Object)) return jQuery.extend(true, {}, target); else if (is(target, Array)) return target.slice(0); return target; }, SET: function(key, val) { var value = !is(val) ? null : val; var parsed = parse(key), base = parsed[0], tokens = parsed[1]; var target = this.keys[base]; this.keys[base] = set(target, tokens.slice(0), value); return this; }, set: function(key, val) { return this.copy().SET(key, val); }, REMOVE: function(key) { return this.SET(key, null).COMPACT(); }, remove: function(key) { return this.copy().REMOVE(key); }, EMPTY: function() { var self = this; jQuery.each(self.keys, function(key, value) { delete self.keys[key]; }); return self; }, load: function(url) { var hash = url.replace(/^.*?[#](.+?)(?:\?.+)?$/, "$1"); var search = url.replace(/^.*?[?](.+?)(?:#.+)?$/, "$1"); return new queryObject(url.length == search.length ? '' : search, url.length == hash.length ? '' : hash); }, empty: function() { return this.copy().EMPTY(); }, copy: function() { return new queryObject(this); }, COMPACT: function() { function build(orig) { var obj = typeof orig == "object" ? is(orig, Array) ? [] : {} : orig; if (typeof orig == 'object') { function add(o, key, value) { if (is(o, Array)) o.push(value); else o[key] = value; } jQuery.each(orig, function(key, value) { if (!is(value)) return true; add(obj, key, build(value)); }); } return obj; } this.keys = build(this.keys); return this; }, compact: function() { return this.copy().COMPACT(); }, toString: function() { var i = 0, queryString = [], chunks = [], self = this; var encode = function(str) { str = str + ""; if ($spaces) str = str.replace(/ /g, "+"); return encodeURIComponent(str); }; var addFields = function(arr, key, value) { if (!is(value) || value === false) return; var o = [encode(key)]; if (value !== true) { o.push("="); o.push(encode(value)); } arr.push(o.join("")); }; var build = function(obj, base) { var newKey = function(key) { return !base || base == "" ? [key].join("") : [base, "[", key, "]"].join(""); }; jQuery.each(obj, function(key, value) { if (typeof value == 'object') build(value, newKey(key)); else addFields(chunks, newKey(key), value); }); }; build(this.keys); if (chunks.length > 0) queryString.push($hash); queryString.push(chunks.join($separator)); return queryString.join(""); } }; return new queryObject(location.search, location.hash); }; }(jQuery.query || {}); // Pass in jQuery.query as settings object如果想获取test，则可以引入插件后，
用如下方法获取：
var test = $.query.get('test');
如果参数有多个相同的名称 ，则可以这样：
var arr = $.query.get('testy');
输出： [ 值1 , 值2, 值3...]
如果要获取多个相同名称中的某一个，可以这样：
var arrayElement = $.query.get('testy[1]');
此插件不仅能获取参数，也能设置参数。
设置一个参数：
var newUrl = $.query.set("section", 5).toString();
输出 ： "?section=5"
设置两个参数：
var newUrl = $.query.set("section", 5).set("action", "do").toString();
输出 : "?action=do§ion=5"
删除一个参数：
var oldQueryAgain = $.query.REMOVE("type");
清空所有参数：
var emptyQuery = $.query.empty();
复制所有参数：
var stillTheSame = $.query.copy();