php指定删除cookie中的一个值,jquery cookie用法(获取cookie值,删除cookie)

$.extend({

/**

1. 设置cookie的值，把name变量的值设为value

example $.cookie(’name’, ‘value’);

2.新建一个cookie 包括有效期 路径 域名等

example $.cookie(’name’, ‘value’, {expires: 7, path: ‘/’, domain: ‘jquery.com’, secure: true});

3.新建cookie

example $.cookie(’name’, ‘value’);

4.删除一个cookie

example $.cookie(’name’, null);

5.取一个cookie(name)值给myvar

var account= $.cookie('name');

**/

cookieHelper: 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;

}

}

});