1.截图

2.jquery.cookie.js

/*!

* jQuery Cookie Plugin v1.4.1

* https://github.com/carhartl/jquery-cookie

*

* Copyright 2006, 2014 Klaus Hartl

* Released under the MIT license

*/

(function (factory) {

if (typeof define === 'function' && define.amd) {

// AMD

define(['jquery'], factory);

} else if (typeof exports === 'object') {

// CommonJS

factory(require('jquery'));

} else {

// Browser globals

factory(jQuery);

}

}(function ($) {

var pluses = /\+/g;

function encode(s) {

return config.raw ? s : encodeURIComponent(s);

}

function decode(s) {

return config.raw ? s : decodeURIComponent(s);

}

function stringifyCookieValue(value) {

return encode(config.json ? JSON.stringify(value) : String(value));

}

function parseCookieValue(s) {

if (s.indexOf('"') === 0) {

// This is a quoted cookie as according to RFC2068, unescape...

s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');

}

try {

// Replace server-side written pluses with spaces.

// If we can't decode the cookie, ignore it, it's unusable.

// If we can't parse the cookie, ignore it, it's unusable.

s = decodeURIComponent(s.replace(pluses, ' '));

return config.json ? JSON.parse(s) : s;

} catch(e) {}

}

function read(s, converter) {

var value = config.raw ? s : parseCookieValue(s);

return $.isFunction(converter) ? converter(value) : value;

}

var config = $.cookie = function (key, value, options) {

// Write

if (arguments.length > 1 && !$.isFunction(value)) {

options = $.extend({}, config.defaults, options);

if (typeof options.expires === 'number') {

var days = options.expires, t = options.expires = new Date();

t.setTime(+t + days * 864e+5);

}

return (document.cookie = [

encode(key), '=', stringifyCookieValue(value),

options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE

options.path ? '; path=' + options.path : '',

options.domain ? '; domain=' + options.domain : '',

options.secure ? '; secure' : ''

].join(''));

}

// Read

var result = key ? undefined : {};

// To prevent the for loop in the first place assign an empty array

// in case there are no cookies at all. Also prevents odd result when

// calling $.cookie().

var cookies = document.cookie ? document.cookie.split('; ') : [];

for (var i = 0, l = cookies.length; i < l; i++) {

var parts = cookies[i].split('=');

var name = decode(parts.shift());

var cookie = parts.join('=');

if (key && key === name) {

// If second argument (value) is a function it's a converter...

result = read(cookie, value);

break;

}

// Prevent storing a cookie that we couldn't decode.

if (!key && (cookie = read(cookie)) !== undefined) {

result[name] = cookie;

}

}

return result;

};

config.defaults = {};

$.removeCookie = function (key, options) {

if ($.cookie(key) === undefined) {

return false;

}

// Must not alter options, thus extending a fresh object...

$.cookie(key, '', $.extend({}, options, { expires: -1 }));

return !$.cookie(key);

};

}));

3.clearCache.js

$(function(){

//清除缓存头部信息

var nocacheHtml = "";

nocacheHtml += "";

nocacheHtml += "";

var today = new Date();

//用户第一次访问，清除缓存。

if(!$.cookie('visit_count')){

$("meta").after(nocacheHtml);

$.cookie('visit_count', today.getDate(), { expires: 7, path: '/' });

}else{

today.setDate(today.getDate()-1);

//如果当天第一次访问,清除缓存。

if(today.getDate() >= $.cookie('visit_count') ){

$("meta").after(nocacheHtml);

$.cookie('visit_count', new Date().getDate(), { expires: 7, path: '/' });

}

//其他时间访问，保留缓存。

}

})