angular2 localstorage

In HTML5, local storage is the property of a window, including Localstorage and Sessionstorage, from which the name should clearly identify the difference between the two, which is always local, and the latter is only accompanied by a session, and the window closes once it is closed. The use of the two is exactly the same, taking Localstorage as an example. if (window.localstorage) {Alert (' This browser s

HTML5 localStorage local storage, html5localstorage This section describes how to use localStorage. Including adding, modifying, deleting, and triggering events to storage objects.Directory 1. Introduction 1.1 description Features 1.2 1.3 Support for the minimum browser version 1.4 applicable scenarios 2. Member 2.1 attributes 2.2 Method 2.3 events 3. Example 3.1 Data Storage 3.2 read data 3.3 store Json ob

First, what is Localstorage, sessionstorageIn HTML5, a new localstorage feature is added, which is primarily used as a local store to solve the problem of insufficient cookie storage space (4k per cookie in the cookie). Localstorage in the General browser support is 5M size, this in different browsers localstorage will

Shadowdom-Encapsulating private stylesANGULAR2 uses shadowdom as the rendering basis for the component, which means that the component is rendered to a separate shadow tree, which is good for good encapsulation of DOM objects and styles:The problem is that most browsers, except for Chrome, do not currently support Shadowdom, so ANGULAR2 provides three strategies for rendering templates to the DOM.Taking the following template as an example, we look at

OverviewANGULAR2 's official recommendation should be to use SYSTEMJS to load, but when I use the tree shaking, I find that if I use Systemjs+rollup, I can only package it into one file, and then lazy loading can't do it.So I used webpack2,webpack2 with the tree shaking, as long as the Tsconfig in the module set to es2015, although the effect is not rollup good, but support lazy loading.In addition, ANGULAR2 currently does not support typescript 2.1.X

If you have seen Angular2 's official website, you should know that you can quickly build a angular project with CLI tools, install node. js and NPM before installing the CLI, and node. JS has a version of 6.9.0 or more, NPM should be above 3.0.0.My node. js and NPM were installed successfully, but always made an error while installing ANGULAR/CLI, and later knew that node. JS had to install the 6.9.4 version.Before installing node. js, if you do not

This article mainly introduces how to judge the results of the validator. Here, let's look at how to implement a custom validator. Goal We want to implement a verification of the phone number of the validator, the use of the example or based on the previous article inside the example, that is, the user information entered the form page. We add a validator that verifies the phone number on the element of the cell phone number. Then, if the phone number verification fails, an error is displayed,

Basic usage of localstorage on HTML5 1. Get the length of the Localstorage: window.localStorage.length 2. Add/Edit contents of Localstorage: Window.localStorage.setItem (key, value); 3. Obtain the value of the key corresponding to the localstorage according to the corresponding index: Window.localStorage.key (index);

Starting with the 2016 V1 version, the Wijmo UI control supports angular 2. Wijmo 2016 v1 strong release, full support angular 2! This article describes using ANGULAR2 to create a html5/typescript based input control.Steps: 1. Create a project using the Visual Studio HTML application. 2. Delete Index.html,app.ts and app.css files. Select Typescript Project Settings, specify COMMONJS as the project model system, and, in order to get

Tags: res introduction persistence development environment service experience environment Building control knowledgeMulti-User Blog system based on mean full stack architecture (ANGULAR2+NODE+MONGODB)Course Study Address: http://www.xuetuwuyou.com/course/223The course out of self-study, worry-free network: http://www.xuetuwuyou.comCourse IntroductionI. Introduction of the CourseMean is a modern web development framework for the JavaScript platform, wh

What is LocalstorageA few days ago in the old project found that the operation of the cookie is very strange, the consultation is to cache some information to avoid passing the parameters on the URL, but did not consider the cookie will cause problems:①cookie size limit of about 4k, not suitable for the storage of business data ②cookie each time with the HTTP transaction sent, wasting bandwidthLocalstorage can be said to be optimized for cookies, which makes it easy to store data in the client a

Detailed description of the. Net Core + Angular2 environment, coreangular2 This article describes how to set up the. Net Core + Angular2 environment, as follows: Environment setup: 1) node. js version> 5.0, NPM version> 3.0, TypeScript version> 2.0 (the latest version is enough) 2) install NTVS 1.2 (node tools for vs) and TSVS dev 1.4 (TS for) 3) construct the package. json, tsconfig. json, and gulp. js fil

On the internet to find a lot of textbooks are not search for this part of the type, self-test to write the tutorial.Scenario Description: The project needs to use bootstrap, it is well known that Bootstrap has no time-date control, need to use a third-party control, I am afraid of how to use third-party controls in Angular2, my project uses ANGULAR-CLI build.Resolution 1: Configure Package.json to add a new dependency, then update to download the new

Why original: Hui Zhi networkAngular1.x obviously very successful, then, why do we have to turn violently to Angular2? Limitations of performanceAngularjs was originally an internal tool for designers to quickly build HTML forms. Over time, various features are added to suit the development of applications in different scenarios. However, due to the initial architectural constraints (such as bindings and templating mechanisms), performance improveme

#var-Local variablesSometimes different elements in the template may need to be called each other, and ANGULAR2 provides a simple syntax for mapping elements to local variables: Adding a property that begins with a # or var-, followed by a section representing the variable name, and an instance of the variable corresponding to the element.In the following code example, we define a local variable v_h1 for the element H1, which points to the DOM object

Angular's idea: always delegate data access to a supportive service class.Angular application: Use the Angular extension syntax to write HTML templates, use component classes to manage these templates, add application logic with services, and package publishing components and services with modules.We start the app by booting the root module. Angular takes over, displays the content of the app in the browser, and responds to the user's interactions based on the instructions we provide.Eight major

Reactive Extensions for Javascript was born a few years ago, and it will be recognized by more developers as the release of the official version of ANGULAR2. The core provided by RXJS is the observable object, which is a combination of asynchronous and event programming using an observable data sequence. A similar asynchronous programming model is that Promise,promise is an asynchronous model based on state change, which cannot be modified once the st

The path of iteration:June 12, the official version of Angularjs1.0.0 launched, the highlights function is basically complete, such as two-way binding, dependency injection, directives and so onAngularjs 1.3.x abandon support IE8 browser, launch single binding syntaxAngularjs 1.5.x adds a similar component writing experience, mainly to pave the transition ANGUALR2angularjs1.x shortcomings;Performance problems, angular is to use dirty check to achieve data update, when the page more and more data

In front-end development, we often encounter communication between two or more html. We can add parameters in the url, but when the amount of data to be transferred is large, try localStorage in html5. 1) Check whether your browser supports localStorage: If(Window. localStorage ){ Alert ('Yes! '); }ElseAlert ('No! '); 2) data is stored in

Cross-origin access to ASP. net mvc in Angular2, angular2mvc Application scenarios 　　Project Development decides to use angular2 for frontend and backend separate development. I am responsible for backend service development. At first, I chose web api for development. Cross-origin access is supported through API middleware + filter. After a development period, the notification needs to be transplanted to