jquery cookie用法(获取cookie值,删除cookie)
cookie在jquery中有指定的cookie操作类,下面我先来介绍我们在使用cookie操作类时的一些问题,然后介绍正确的使用方法。使用JQuery操作cookie时 发生取的值不正确的问题:
结果发现cookie有四个不同的属性:
名称,内容,域,路径
关于cookie的path设置需要注意,如果不设置path:'/'的话,path则会根据目录自动设置[如:http://www.xxx.com/user/,path会被设置为 '/user']
$.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 = .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);
// Does this cookie string begin with thehttp://www.9ask.cn/tj/ g begin with?
if (cookie.substring(0, name.length + 1) == (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
}
});
Jquery操作Cookie记录用户查询过信息
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