jQuery Cookie 存、取、删实例——小方改写

改写自：http://blog.csdn.net/zxmcl/archive/2007/08/02/1723595.aspx

扩展$:

$.extend({
    cookieHandle: function(options){
        var _objSelf = this;
        var _settings = {
            type : 'get', // 'get', 'set' or 'del'
            cookieName : 'gfw', // should be in string
            cookieValue : '1', // string too
            expireInDays: 30 // int, days
        };
        $.extend(_settings, options);
        if (_settings.type === 'set') {
            var _exp  = new Date();
            _exp.setTime(_exp.getTime() + _settings.expireInDays*24*60*60*1000);
            document.cookie = _settings.cookieName + "="+ escape (_settings.cookieValue) + ";expires=" + _exp.toGMTString();
        } else if(_settings.type === 'get') {
            var _arr = document.cookie.match(new RegExp("(^| )" +  _settings.cookieName + "=([^;]*)(;|$)"));
            if(_arr != null) {
                return unescape(_arr[2]);
            }
            return null;
        } else if(_settings.type === 'del') {
            var _exp = new Date();
            _exp.setTime(_exp.getTime() - 1);
            var _cval = _objSelf.cookieHandle({
                cookieName:  _settings.cookieName
            });
            if(_cval != null) {
                document.cookie =  _settings.cookieName + "=" + _cval + ";expires=" + _exp.toGMTString();
            }
        } else {
            window.console && console.log && console.log('wrong type when calling $.cookieHandle()');
        }
    });

使用方法：

存cookie：

$.cookieHandle({
    type: 'set',
    cookieName: 'gfw',
    cookieValue: '1',
    expireInDays: 100 // 100天后失效
});

读cookie ：

$.cookieHandle({cookieName: 'gfw'}); // 返回所存的cookie的值，为空时，返回null

删cookie:

$.cookieHandle({
    type: 'del',
    cookieName: 'gfw'
});