用个插件escape给带了中文的url编码后就会报错！提示decodeURIComponent不支持的编码
找到报错的地方，只需要在使用它前给unescape解码了。
var q = "" + this;
q = q.replace(/^[?#]/, ''); // remove any leading ? || #
q = q.replace(/[;&]$/, ''); // remove any trailing & || ;
这加上 q = unescape(q); 就可以正常使用了。
if ($spaces) q = q.replace(/[+]/g, ' '); // replace +'s with spaces
插件是使用方法：
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();
插件源码：
/**
* 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 & || ;
q = unescape(q);
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