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  • jquery.cookie.js 2.99 KiB
    /*!
     * jQuery Cookie Plugin v1.4.0
     * https://github.com/carhartl/jquery-cookie
     *
     * Copyright 2013 Klaus Hartl
     * Released under the MIT license
     */
    (function (factory) {
    	if (typeof define === 'function' && define.amd) {
    		// AMD. Register as anonymous module.
    		define(['jquery'], factory);
    	} else {
    		// Browser globals.
    		factory(jQuery);
    	}
    }(function ($) {
    
    	var pluses = /\+/g;
    
    	function encode(s) {
    		return config.raw ? s : encodeURIComponent(s);
    	}
    
    	function decode(s) {
    		return config.raw ? s : decodeURIComponent(s);
    	}
    
    	function stringifyCookieValue(value) {
    		return encode(config.json ? JSON.stringify(value) : String(value));
    	}
    
    	function parseCookieValue(s) {
    		if (s.indexOf('"') === 0) {
    			// This is a quoted cookie as according to RFC2068, unescape...
    			s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
    		}
    
    		try {
    			// Replace server-side written pluses with spaces.
    			// If we can't decode the cookie, ignore it, it's unusable.
    			// If we can't parse the cookie, ignore it, it's unusable.
    			s = decodeURIComponent(s.replace(pluses, ' '));
    			return config.json ? JSON.parse(s) : s;
    		} catch(e) {}
    	}
    
    	function read(s, converter) {
    		var value = config.raw ? s : parseCookieValue(s);
    		return $.isFunction(converter) ? converter(value) : value;
    	}
    
    	var config = $.cookie = function (key, value, options) {
    
    		// Write
    
    		if (value !== undefined && !$.isFunction(value)) {
    			options = $.extend({}, config.defaults, options);
    
    			if (typeof options.expires === 'number') {
    				var days = options.expires, t = options.expires = new Date();
    				t.setTime(+t + days * 864e+5);
    			}
    
    			return (document.cookie = [
    				encode(key), '=', stringifyCookieValue(value),
    				options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
    				options.path    ? '; path=' + options.path : '',
    				options.domain  ? '; domain=' + options.domain : '',
    				options.secure  ? '; secure' : ''
    			].join(''));
    		}
    
    		// Read
    
    		var result = key ? undefined : {};
    
    		// To prevent the for loop in the first place assign an empty array
    		// in case there are no cookies at all. Also prevents odd result when
    		// calling $.cookie().
    		var cookies = document.cookie ? document.cookie.split('; ') : [];
    
    		for (var i = 0, l = cookies.length; i < l; i++) {
    			var parts = cookies[i].split('=');
    			var name = decode(parts.shift());
    			var cookie = parts.join('=');
    
    			if (key && key === name) {
    				// If second argument (value) is a function it's a converter...
    				result = read(cookie, value);
    				break;
    			}
    
    			// Prevent storing a cookie that we couldn't decode.
    			if (!key && (cookie = read(cookie)) !== undefined) {
    				result[name] = cookie;
    			}
    		}
    
    		return result;
    	};
    
    	config.defaults = {};
    
    	$.removeCookie = function (key, options) {
    		if ($.cookie(key) === undefined) {
    			return false;
    		}
    
    		// Must not alter options, thus extending a fresh object...
    		$.cookie(key, '', $.extend({}, options, { expires: -1 }));
    		return !$.cookie(key);
    	};
    
    }));