关于cookie的函数

最新推荐文章于 2025-02-19 15:01:29 发布

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最新推荐文章于 2025-02-19 15:01:29 发布

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分类专栏： script 文章标签： domain cookies date path function null

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/**
 * cookie操作工具. 使用方法:保存值:CookieTool('name','1',{expires: 7})
 * //表示保存一个cookie值为1,键值为name,失效时间7天以后 取值:CookieTool('name') //返回1
 * 
 * @param {}
 *            name
 * @param {}
 *            value
 * @param {}
 *            options
 * @return {}
 */
CookieTool = function(name, value, options) {
	if (typeof value != 'undefined') {
		options = options || {};
		if (value === null) {
			value = '';
			options.expires = -1;
		}
		var expires = '';
		if (options.expires
				&& (typeof options.expires == 'number' || options.expires.toUTCString)) {
			var date;
			if (typeof options.expires == 'number') {
				date = new Date();
				date.setTime(date.getTime()
						+ (options.expires * 24 * 60 * 60 * 1000));
			} else {
				date = options.expires;
			}
			expires = '; expires=' + date.toUTCString();
		}
		var path = options.path ? '; path=' + (options.path) : '';
		var domain = options.domain ? '; domain=' + (options.domain) : '';
		var secure = options.secure ? '; secure' : '';
		document.cookie = [ name, '=', encodeURIComponent(value), expires,
				path, domain, secure ].join('');
	} else {
		var cookieValue = null;
		if (document.cookie && document.cookie != '') {
			var cookies = document.cookie.split(';');
			for ( var i = 0; i < cookies.length; i++) {
				var cookie = trim(cookies[i]);
				if (cookie.substring(0, name.length + 1) == (name + '=')) {
					cookieValue = decodeURIComponent(cookie
							.substring(name.length + 1));
					break;
				}
			}
		}
		return cookieValue;
	}
};