local-storage

问题 I have a windows 8 app (Digital Nightstand) in the windows 8 appstore. The app stores user preferences in XML files on the user's machine, also known as local storage. What I want to know is that if I release an update for my app and the users take the update, will the existing stored settings be wiped out? 回答1: The answer is no! Don't worry when user updates an app, the local and roaming folders/settings won't get wiped out. 回答2: The data does not get deleted. But if you release an update

问题 I am trying to find out where Firefox stores the sessionStorage content but have been unable to find so. I am expecting it to be in a SqLite database like the localStorage content is stored but I have not been able to find it. So far, I have searched all the typical ".sqlite" files in the profile folder such as cookies.sqlite and content-prefs.sqlite etc but they do not seem to have the sessionStorage data. I also tried to open the special in-memory database that Firefox supposedly creates -

问题 I have a JavaScript code which save string to the Local storage, the string size is 400000, var dataURL = canvas.toDataURL("image/jpg").toString(); localStorage.setItem("dataURL", dataURL); I open the html file from chrome, in one computer its OK in the other computer i get Uncaught QuotaExceededError: Failed to execute 'setItem' on 'Storage': Setting the value of 'dataURL' exceeded the quota. In this computer I allowed to save string length no more than 100000 chars. Both computers have the

问题 In Firefox, after I perform localStorage.clear() my localStorage comes back when I refresh the page. The scenario is: 1) window opens a popup 2) in this popup, I open the dev tools and type in localStorage.clear(); ->local Storage is cleaned ! 3) I refresh the window popup page and.. my localStorage is BACK ! (If I close the popup, then localStroage is cleared) Everything works fine in Chrome. How can I clear localStorage in Firefox ? I also tried : localStoparge.removeItem("myItem") and SAME

问题 I saw this in the diveintohtml5 website. This is how they check to see if localstorage is supported on the browser. return 'localStorage' in window && window['localStorage'] !== null; Would this be the same as just doing? return window.localStorage != undefined 回答1: 1 return 'localStorage' in window && window['localStorage'] !== null; This returns true if the window object contains a property with the name localStorage and the value of that property is not null . 2 return window.localStorage

问题 I am developing an app to serve as a learning and I'm using Parse (parse.com) as a data source. I am conducting download all objects of my classes in the parse and saving to a local store that has Parse. The following code snippet that performs one of downloads: public void noticia_getOrUpdate(boolean isUpdate) throws ParseException { ParseQuery<Noticia> query = new ParseQuery(Noticia.class); query.orderByDescending("createdAt"); List<Noticia> lNoticias = null; try { if (isUpdate) { lNoticias

问题 Could I securely use local storage instead of cookies to store session credentials? Would I need to store an encrypted hash?? EDIT: Would this be secure enough? User logs in. Server returns success message including salted bcrypt hash mixing userid, password, timestamp, and possibly ip address. This is saved in local storage. On future connects this hash is sent, server assumes accountability as long as IP address hasn't changed, and time limit hasn't expired. 回答1: localstorage is just as

问题 I'm using a system to alert users when a major update has happened to a site, and I do it with LocalStorage, when I made the system, I made the system check if tip was "null", then set "tip" to true when they got the alert. Now, I would like to set the 'tip' localstorage back to null, and use "tip2" instead. Would I do this? localStorage.setItem('tip', 'null'); 回答1: localStorage.removeItem('tip') if you are aiming to remove the key localStorage.setItem('tip', 'null') if you just want to set

问题 We have two pages "/read" and "/write". Page "/write" each second updates localStorage with current time: setInterval(function(){ var time = (new Date()).getTime(); localStorage.setItem("time", time); console.log("set", time); },1000); Page "/read" reads same storage: setInterval(function(){ var time = localStorage.getItem("time"); console.log("get", time); },1000); One would think that "/read" page should show the same values which are written to localStorage by another page. But in IE11 on

问题 I am making a form where users can input their data. I'd like for this date to be saved by use of local storage. But when i refresh the page only height and weight are still remembered. And i have been quite stuck on trying to make gender , sportivity and birthdate be remembered as well. <!DOCTYPE html> <html> <head> <link rel="stylesheet" href="http://code.jquery.com/mobile/1.0rc2/jquery.mobile-1.0rc2.min.css" /> <title>Test</title> <script type="text/javascript" src="http://code.jquery.com