js文件Cookie存取值范例代码

发布时间：2023-10-17 15:04:51 所属栏目：教程来源：

导读：代码如下:

/*

Cookie工具

使用方法:

//存值

var value = "7天";

tools.cookie("day",value, {expires:7}); //将字符串:"7天" 以 "day"这个key保存到cookie中5天

//取值

var v = too

代码如下:

/*

Cookie工具

使用方法:

//存值

var value = "7天";

tools.cookie("day",value, {expires:7}); //将字符串:"7天" 以 "day"这个key保存到cookie中5天

//取值

var v = tools.cookie("day"); //用 "day" 这个key从cookie取出值

*/

tools.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.toGMTString)) {

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.toGMTString(); // 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;

}

};

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