local-storage

问题 I would like to have a timer for content in localStorage. For example I have got a dynamically updated DIV <div id="news"><p>test</p></div> And managed to add it as html block to localStorage by using this code: $(function() { localStorage["homeNews"] = JSON.stringify($("#news").html()); }); $(function() { if (localStorage["homeNews"] != null) { var contentsOfNews = JSON.parse(localStorage["homeNews"]); $("#news").html(contentsOfNews); } }); I need to add a time stamp to the localStorage[

问题 How Does localStorage in HTML5 work? I searched every where (even in SO ) to find the actual internal logic of localStorage, but I ended up with visiting some examples which uses localStorage. I haven't found any useful Answer to my question. Can Someone post me a link or explain about the working of localStorage 回答1: I'm not necessarily sure what you're looking for here...but the internal implementation of localStorage is going to be browser specific. I wouldn't count on any two browsers

问题 How Does localStorage in HTML5 work? I searched every where (even in SO ) to find the actual internal logic of localStorage, but I ended up with visiting some examples which uses localStorage. I haven't found any useful Answer to my question. Can Someone post me a link or explain about the working of localStorage 回答1: I'm not necessarily sure what you're looking for here...but the internal implementation of localStorage is going to be browser specific. I wouldn't count on any two browsers

问题 I've implemented a login page using Angular 2. After login, I get jsonwebtoken, userId, userRole, userName from server. I'm storing this info in localstorage so that I can access it any time and maintain login state if user refreshes page. AuthService.ts import {Injectable} from "@angular/core"; @Injectable() export class AuthService { redirectUrl: string; logout() { localStorage.clear(); } isLoggedIn() { return localStorage.getItem('token') !== null; } isAdmin() { return localStorage.getItem

问题 I am trying to keep selected tab active on page refresh. but when i am not able to find any solution for tabs in bootstrap 4. i tried to make changes according to bootstrap 3 solutions but nothing work. please help me. HTML <ul class="nav my-nav1 nav-tabs mt-3 " id="myTab" role="tablist"> <li class="nav-item border border-secondary rounded"> <a class="nav-link active" data-toggle="tab" href="#menu1">MENU1</a> </li> <li class="nav-item border border-secondary rounded"> <a class="nav-link "

问题 What vulnerabilities do i face, when coding a web app utilising localStorage, of a user inadvertently or deliberately delete localStorage data? I'm happy to put a button saying "Delete my data", this is under my control, but are there ways beyond my control that localStorage data may be deleted? Or not used (ie. Incognito mode/private browsing mode)? Thanks 回答1: localStorage is editable by the user , it's similar to the cookies . User can delete / edit it if he wants , so you should make ur

问题 On iOS7, while trying to access HTML5 localStorage object via JavaScript, stops execution of Javascript. It works correctly in previous iOS versions. The app runs perfectly when the app is freshly installed and launched. But then, I close the app and launch again, it does not work and fails on accessing localStorage. To disable cookies, I have used below code: [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyNever]; To access localStorage, I have

问题 I know localstorage is just a simple hash map with getItem and setItem. What if my Item is a JSON array and I would just like to add one item at the end of the array? Are there more efficient ways than calling setItem for just one more entry? 回答1: Unfortunately no. localStorage support only the string type so you will have to JSON.stringify the array before saving, which means you need to load it and parse it before you can add anything to it. You can write a simple wrapper to do this (can

问题 I'm using backbone + backbone.localStorage to persist my data, and I get a wrong behavior: I've got a model settings with one attribute called user Settings = Backbone.Model.extend({ localStorage : new Backbone.LocalStorage('settingsStore') }); var settings = new Settings(); settings.set({user: 'USERNAME'}); settings.save(); After this code if I output the settings.attributes data in weinre I get the following: settings.attributes Object id: "3ac78cfb-ad60-1ab8-8391-f058ae9bfcfb" user:

问题 i am work at an app which Embed an WebView and display a HTML5 page . when open the html page in android chrome Browser.the database was create normal. but when i run this app , the database can not create . it seem that html page can not create the database on WebView. anybody know why? here is my Activity code: public class efan_NewsReader extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate