jquery - 如何在jquery中为对话框设置cookie？

Question

//----------jquery.cookie.js begins-------------
/*!
 * jQuery Cookie Plugin v1.4.1
 * https://github.com/carhartl/jquery-cookie
 *
 * Copyright 2006, 2014 Klaus Hartl
 * Released under the MIT license
 */
(function (factory) {
	if (typeof define === 'function' && define.amd) {
		// AMD (Register as an anonymous module)
		define(['jquery'], factory);
	} else if (typeof exports === 'object') {
		// Node/CommonJS
		module.exports = factory(require('jquery'));
	} 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 (arguments.length > 1 && !$.isFunction(value)) {
			options = $.extend({}, config.defaults, options);

			if (typeof options.expires === 'number') {
				var days = options.expires, t = options.expires = new Date();
				t.setMilliseconds(t.getMilliseconds() + 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().
			cookies = document.cookie ? document.cookie.split('; ') : [],
			i = 0,
			l = cookies.length;

		for (; i < l; i++) {
			var parts = cookies[i].split('='),
				name = decode(parts.shift()),
				cookie = parts.join('=');

			if (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) {
		// Must not alter options, thus extending a fresh object...
		$.cookie(key, '', $.extend({}, options, { expires: -1 }));
		return !$.cookie(key);
	};

}));
//---------------jquery.cookie.js ends-----------
var $j = jQuery.noConflict(); 

$j(document).ready(function()
{
		
		$.cookie('the_cookie', 'the_value');
		var myCookie = $.cookie('the_cookie');
		alert(myCookie);
		
		$j('#popup_content').dialog
		(
		{
			modal:true,
			resizable:false,
			draggable:false,
			height: 525,
			width:475, 
			closeOnEscape: true,
		}
		);

});

	function setCookie(cname, cvalue, exdays) 
	{
		var d = new Date();
		d.setTime(d.getTime() + (exdays*24*60*60*1000));
		var expires = "expires="+d.toUTCString();
		document.cookie = cname + "=" + cvalue + "; " + expires;
	}

我希望我的对话框仅打开一次，并且我读到可以通过向我的对话框添加 cookie 来完成此操作。在搜索时，我得到了将 cookie 添加到对话框的代码，但它不起作用。我不知道错误在哪里。我是 jquery 新手。我想要的只是我的对话框应该只打开一次。

这是 jquery.cookie.js 的完整代码。

提前致谢。 :)

Answer 1

请检查控制台中是否出现以下错误，

TypeError: $.cookie is not a function

如果是这样，请包含 Cookie 函数的 jQuery 库..

请参阅下面的链接了解更多信息，

$.cookie is not a function typeerror

尝试下面的代码，还包括 jQuery 对话框相关库，

<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.js"> </script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-cookie/1.4.1/jquery.cookie.js"> </script>

           <script type="text/javascript">
		  $(function() {
		  
		  $.cookie('showDialog', true); 
		  alert($.cookie('showDialog'));
		  
	if ($.cookie('showDialog') == undefined || $.cookie('showDialog') == null || $.cookie('showDialog') != 'false') 
		{

			$('#popup_content').dialog
			(
			{
				modal:true,
				resizable:false,
				draggable:false,
				height: 525,
				width:475, 
				closeOnEscape: true,
			}
			);
			$.cookie('showDialog', 'false', { expires: 1 }); // set the cookie, with expiry after 1 day
		}
		
		
		

	});
		   
		   </script>
</head>