sessionstorage | 易学教程

advertisement banner show only once in browser session

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问题 How do you show an advertisement banner only once during a browser session using JavaScript or jQuery in a website? Once the session is closed and the browser is closed, the ad must be shown again when I open the website in the browser again. One more thing when i navigate across website banner must display unless it is not closed. 回答1: You can use cookie to remember if ad was displayed or not. You can use this plugin: https://github.com/carhartl/jquery-cookie Make a method to display the ad:

Speed of sessionStorage [closed]

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问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago . I am making a website where the user can select options on an item such as size or colour. However, I am using Backbone and when the model is updated the view is re-rendered and options are reset to default. To stop this, I have used sessionStorage to load the values back in after

vue路由组件左右切换（兼听手机返回键或自写按钮）

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示例 http://47.94.90.89/dist 1 安装vue-cli （1）下载安装node.js （1） npm install -g cnpm --registry= https://registry.npm.taobao.org 换源（1） cnpm install -g vue-cli 全局安装vue-cli 已安装则不用（1） vue init webpack Vue-Project 初始化vue项目使用webpack模板，项目名称（自带webpack）（1） cnpm install 初始化生成node_modules （1） npm run dev 需要上线打包为 npm run build 2 配置路由（router 目录>index.js） import ccc from '@/components/ccc' Router.prototype.go = function (a) { sessionStorage.isBack = true if(a){ window.history.go(a) }else{ window.history.go(-1) } } window.addEventListener("popstate", function(e) { sessionStorage.isBack = true }, false); Vue

http及浏览器相关知识点归纳

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http是应用层协议，采用请求/响应模型 1、浏览器地址栏输入URL地址后发生了什么？浏览器判断地址是否是合理的URL地址，是否是http协议请求，如果是则进入下一步浏览器对此URL进行缓存检查：如果存在缓存则从本地提取文件（from memory cache，返回200），如果缓存过期或缓存不存在，则发起远程请求向DNS服务器发送请求，解析URL对应的IP地址客户端根据IP地址，连同cookie、userAgent等信息向web服务器发送请求，经过三次握手建立TCP连接客户端向服务器端发送http请求，该请求作为TCP三次握手的第三个报文的数据发送给服务器 ngnix根据URL做服务分发，分发到后端服务器或者是静态资源服务器，首屏请求一般是分发到静态服务器返回一个html 服务器端处理请求返回http响应报文，如果浏览器访问过该页面，缓存上有对应的资源，与服务器最后修改记录对比，一致返回304，否则返回200和对应资源如果是200无缓存，则浏览器接收到信息并开始下载该html文件；如果是304有缓存，则浏览器从本地提取文件释放TCP连接浏览器解析该html文本并显示内容，同时使用和设置缓存补充：浏览器渲染引擎工作流程：解析html构建DOM树时，渲染引擎会将html文件的标签元素解析成多个DOM元素对象节点，并且将这些节点根据父子关系组成一个树结构

sessionStorage over localStorage in PhoneGap

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问题 I am currently developing a PhoneGap application and am using sessionStorage rather than localStorage because we are facing some problems with localStorage. Are there any downsides to using sessionStorage over localStorage? 回答1: sessionStorage gets erased every time you close the application. Other than that there is no difference. Here is the usage example: var keyName = window.sessionStorage.key(0); //Get key name window.sessionStorage.setItem("key", "value"); //Set item var value = window

localstorage、sessionstorage以及cookie的概念区别？

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基本概念 localstorage是HTML5标准中新加入的技术，早起考虑到兼容性的问题没有广泛使用，现在已经被大多数浏览器所支持. sessionstorage会话，可以将一部分数据在当前会话中保存下来，刷新页面数据依旧存在。但是关闭页面后数据会被清空。 cookie主要用来保存登录信息，就比如随便一个网站上登录时可以看到记住密码，可以在本地保存一段时间。区别： Cookie：大小在4kb左右，可以设置有效期；若没有设置有效期，则关闭浏览器后cookie值就会被清除掉；若设置过期时间；cookie会存放在硬盘中，过期才会失效。Cookie的作用域在所有同源窗口中都是共享的。通信方式：cookie在浏览器和服务器之间来回传递。 SessionStorage：大小在5Mb左右，仅在当前浏览器窗口关闭之前有效，关闭页面或者浏览器会被清除。作用域在同一个浏览器窗口是共享的（不同浏览器、同一个页面也是不共享的）。通信方式：仅在客户端（浏览器）中保存，不参与服务器通信。 Localstorage：大小在5Mb左右，永久有效；即使窗口或者浏览器关闭也会一直保存，除非手动永久清除。作用域为所有同源窗口中都是共享的。通信方式：仅在客户端（浏览器）中保存，不参与和服务器的通信来源： CSDN 作者： Stary_Night 链接： https://blog.csdn.net/Stary

关于浏览器页面间消息传递

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可以使用html5的storage，与事件。 localstorage与sessionstorage本地存储对象。在ie11以及其他现代浏览器上均支持。介绍说sessionstorage不支持事件响应。还没有试。以前看介绍说portal类web应用，多个网页，可以实时响应服务器消息，以及在页面、页面内组件之间同步。来源： https://www.cnblogs.com/silvestris/p/12038157.html

SessionStorage Javascript =/= PHP?

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问题 I wrote in SessionStorage a variable "level" with value "4" with Javascript. sessionStorage.setItem('level', 4); But when I want to read it with PHP, it makes error :/ echo $_SESSION["level"]; Picture of the problem How can I resolve this problem ? 回答1: The JavaScript session storage has absolutely nothing in common with the PHP session. The former is owned by the client (browser) and can be accessed only in the client context, while the later exists on the server and it's connected to the

sessionStorage proxy class scope

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问题 I am wondering how to access the native sessionStorage scope from within my custom methods. My example: https://jsfiddle.net/3mc7ao7j/1/ At line 3 I would like to be able to proxy through to my native sessionStorage after perform my mutation on the data. How do I access that scope again though? I know I can just call: sessionStorage.setItem() But that simply works because it is globally available and it feels wrong to do that. Mainly because I would also want to know how to do this without an

How to store the token in Local or session storage in android?

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问题 I'm creating an app that interacts with SOAP web-services to get data from the database. When the user successfully logins it generates a token via web-services. This token will be needed later on in other activities to call web-service methods. My question is, how can I pass on that token to the next activity when its needed and maintain it until the user logs out. MainActivity.java SharedPreferences preferences=getApplicationContext().getSharedPreferences("YourSessionName", MODE_PRIVATE);

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