jquery cookie的用法总结

前端技术 2023/09/07 JavaScript

jQuery cookie是个很好的cookie插件，大概的使用方法如下
example $.cookie(\'name\', ‘value\');
设置cookie的值，把name变量的值设为value
example $.cookie(\'name\', ‘value\', {expires: 7, path: ‘/\', domain: ‘jquery.com\', secure: true});
新建一个cookie 包括有效期 路径 域名等
example $.cookie(\'name\', ‘value\');
新建cookie
example $.cookie(\'name\', null);
删除一个cookie

var account= $.cookie(\'name\');
取一个cookie(name)值给myvar

代码如下

复制代码 代码如下:

jQuery.cookie = function(name, value, options) {
    if (typeof value != \'undefined\') { // name and value given, set cookie
        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(); // use expires attribute, max-age is not supported by IE
        }
        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 { // only name given, get cookie
        var cookieValue = null;
        if (document.cookie && document.cookie != \'\') {
            var cookies = document.cookie.split(\';\');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + \'=\')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }
};

然后看了下Discuz!中对cookie的操作方法
如下,发现少了个遍历用;分割的数组的处理
复制代码 代码如下:

function getcookie(name) {
var cookie_start = document.cookie.indexOf(name);
var cookie_end = document.cookie.indexOf(\";\", cookie_start);
return cookie_start == -1 ? \'\' : unescape(document.cookie.substring(cookie_start + name.length + 1, (cookie_end > cookie_start ? cookie_end : document.cookie.length)));
}
function setcookie(cookieName, cookieValue, seconds, path, domain, secure) {
var expires = new Date();
expires.setTime(expires.getTime() + seconds);
document.cookie = escape(cookieName) + \'=\' + escape(cookieValue)
+ (expires ? \'; expires=\' + expires.toGMTString() : \'\')
+ (path ? \'; path=\' + path : \'/\')
+ (domain ? \'; domain=\' + domain : \'\')
+ (secure ? \'; secure\' : \'\');
}

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