How to Use Vuex in Vue.js

Due to using a single state tree, all state of our application is contained inside one big object. However, as our application grows in scale, the store can get really bloated.

To help with that, Vuex allows us to divide our store into modules. Each module can contain its own state, mutations, actions, getters, and even nested modules - it's fractal all the way down:

const moduleA = {
 state: { ... },
 mutations: { ... },
 actions: { ... },
 getters: { ... }
}

const moduleB = {
 state: { … },
 mutations: { … },
 actions: { … }
}

const store = new Vuex.Store({
 modules: {
  a: moduleA,
  b: moduleB
 }
})

store.state.a // -> moduleA’s state
store.state.b // -> moduleB’s state

Module Local State

Inside a module’s mutations and getters, the first argument received will be the module’s local state.

const moduleA = {
 state: { count: 0 },
 mutations: {
  increment (state) {
   // state is the local module state
   state.count++
  }
 },

 getters: {
  doubleCount (state) {
   return state.count * 2
  }
 }
}

Similarly, inside module actions, context.state will expose the local state, and root state will be exposed as context.rootState:

const moduleA = {
 // …
 actions: {
  incrementIfOddOnRootSum ({ state, commit, rootState }) {
   if ((state.count + rootState.count) % 2 === 1) {
    commit(‘increment’)
   }
  }
 }
}

Also, inside module getters, the root state will be exposed as their 3rd argument:

const moduleA = {
 // …
 getters: {
  sumWithRootCount (state, getters, rootState) {
   return state.count + rootState.count
  }
 }
}

Namespacing

By default, actions, mutations and getters inside modules are still registered under the global namespace - this allows multiple modules to react to the same mutation/action type.

If you want your modules to be more self-contained or reusable, you can mark it as namespaced with namespaced: true. When the module is registered, all of its getters, actions and mutations will be automatically namespaced based on the path the module is registered at. For example:

const store = new Vuex.Store({
 modules: {
  account: {
   namespaced: true,

   // module assets
   state: { … }, // module state is already nested and not affected by namespace option
   getters: {
    isAdmin () { … } // -> getters[‘account/isAdmin’]
   },
   actions: {
    login () { … } // -> dispatch(‘account/login’)
   },
   mutations: {
    login () { … } // -> commit(‘account/login’)
   },

   // nested modules
   modules: {
    // inherits the namespace from parent module
    myPage: {
     state: { … },
     getters: {
      profile () { … } // -> getters[‘account/profile’]
     }
    },

    // further nest the namespace
    posts: {
     namespaced: true,

     state: { … },
     getters: {
      popular () { … } // -> getters[‘account/posts/popular’]
     }
    }
   }
  }
 }
})

Namespaced getters and actions will receive localized gettersdispatch and commit. In other words, you can use the module assets without writing prefix in the same module. Toggling between namespaced or not does not affect the code inside the module.

Accessing Global Assets in Namespaced Modules

If you want to use global state and getters, rootState and rootGetters are passed as the 3rd and 4th arguments to getter functions, and also exposed as properties on the context object passed to action functions.

To dispatch actions or commit mutations in the global namespace, pass { root: true } as the 3rd argument to dispatch and commit.

modules: {
 foo: {
  namespaced: true,

  getters: {
   // getters is localized to this module’s getters
   // you can use rootGetters via 4th argument of getters
   someGetter (state, getters, rootState, rootGetters) {
    getters.someOtherGetter // -> ‘foo/someOtherGetter’
    rootGetters.someOtherGetter // -> ‘someOtherGetter’
   },
   someOtherGetter: state => { … }
  },

  actions: {
   // dispatch and commit are also localized for this module
   // they will accept root option for the root dispatch/commit
   someAction ({ dispatch, commit, getters, rootGetters }) {
    getters.someGetter // -> ‘foo/someGetter’
    rootGetters.someGetter // -> ‘someGetter’

    dispatch(‘someOtherAction’) // -> ‘foo/someOtherAction’
    dispatch(‘someOtherAction’, null, { root: true }) // -> ‘someOtherAction’

    commit(‘someMutation’) // -> ‘foo/someMutation’
    commit(‘someMutation’, null, { root: true }) // -> ‘someMutation’
   },
   someOtherAction (ctx, payload) { … }
  }
 }
}

Register Global Action in Namespaced Modules

If you want to register global actions in namespaced modules, you can mark it with root: true and place the action definition to function handler. For example:

{
 actions: {
  someOtherAction ({dispatch}) {
   dispatch(‘someAction’)
  }
 },
 modules: {
  foo: {
   namespaced: true,

   actions: {
    someAction: {
     root: true,
     handler (namespacedContext, payload) { … } // -> ‘someAction’
    }
   }
  }
 }
}

Binding Helpers with Namespace

When binding a namespaced module to components with the mapStatemapGettersmapActionsand mapMutations helpers, it can get a bit verbose:

computed: {
 …mapState({
  a: state => state.some.nested.module.a,
  b: state => state.some.nested.module.b
 })
},
methods: {
 …mapActions([
  ‘some/nested/module/foo’, // -> this’some/nested/module/foo’
  ‘some/nested/module/bar’ // -> this’some/nested/module/bar’
 ])
}

In such cases, you can pass the module namespace string as the first argument to the helpers so that all bindings are done using that module as the context. The above can be simplified to:

computed: {
 …mapState(‘some/nested/module’, {
  a: state => state.a,
  b: state => state.b
 })
},
methods: {
 …mapActions(‘some/nested/module’, [
  ‘foo’, // -> this.foo()
  ‘bar’ // -> this.bar()
 ])
}

Furthermore, you can create namespaced helpers by using createNamespacedHelpers. It returns an object having new component binding helpers that are bound with the given namespace value:

import { createNamespacedHelpers } from ‘vuex’

const { mapState, mapActions } = createNamespacedHelpers(‘some/nested/module’)

export default {
 computed: {
  // look up in some/nested/module
  …mapState({
   a: state => state.a,
   b: state => state.b
  })
 },
 methods: {
  // look up in some/nested/module
  …mapActions([
   ‘foo’,
   ‘bar’
  ])
 }
}

Caveat for Plugin Developers

You may care about unpredictable namespacing for your modules when you create a plugin that provides the modules and let users add them to a Vuex store. Your modules will be also namespaced if the plugin users add your modules under a namespaced module. To adapt this situation, you may need to receive a namespace value via your plugin option:

// get namespace value via plugin option
// and returns Vuex plugin function
export function createPlugin (options = {}) {
 return function (store) {
  // add namespace to plugin module’s types
  const namespace = options.namespace || ‘’
  store.dispatch(namespace + ‘pluginAction’)
 }
}

Dynamic Module Registration

You can register a module after the store has been created with the store.registerModule method:

// register a module myModule
store.registerModule(‘myModule’, {
 // …
})

// register a nested module nested/myModule
store.registerModule([‘nested’, ‘myModule’], {
 // …
})

The module’s state will be exposed as store.state.myModule and store.state.nested.myModule.

Dynamic module registration makes it possible for other Vue plugins to also leverage Vuex for state management by attaching a module to the application’s store. For example, the vuex-router-synclibrary integrates vue-router with vuex by managing the application’s route state in a dynamically attached module.

You can also remove a dynamically registered module with store.unregisterModule(moduleName). Note you cannot remove static modules (declared at store creation) with this method.

Preserving state

It may be likely that you want to preserve the previous state when registering a new module, such as preserving state from a Server Side Rendered app. You can achieve this with preserveState option: store.registerModule(‘a’, module, { preserveState: true })

When you set preserveState: true, the module is registered, actions, mutations and getters are added to the store, but the state not. It’s assumed that your store state already contains state for that module and you don’t want to overwrite it.

Module Reuse

Sometimes we may need to create multiple instances of a module, for example:

  • Creating multiple stores that use the same module (e.g. To avoid stateful singletons in the SSR when the runInNewContext option is false or ‘once’);
  • Register the same module multiple times in the same store.

If we use a plain object to declare the state of the module, then that state object will be shared by reference and cause cross store/module state pollution when it’s mutated.

This is actually the exact same problem with data inside Vue components. So the solution is also the same - use a function for declaring module state (supported in 2.3.0+):

const MyReusableModule = {
 state () {
  return {
   foo: ‘bar’
  }
 },
 // mutations, actions, getters…
}

Thanks for reading. If you liked this post, share it with all of your programming buddies!

Further reading

A beginners guide to Vuex

Getting Started with Vuex: Managing State in Vue.js

Quick Intro to Vuex ORM 

How to use Vuex and Redux in your apps?

Vuex Crash Course | State Management


This post was originally published here

#vue-js #javascript #web-development

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How to Use Vuex in Vue.js
Aria Barnes

Aria Barnes

1625232484

Why is Vue JS the most Preferred Choice for Responsive Web Application Development?

For more than two decades, JavaScript has facilitated businesses to develop responsive web applications for their customers. Used both client and server-side, JavaScript enables you to bring dynamics to pages through expanded functionality and real-time modifications.

Did you know!

According to a web development survey 2020, JavaScript is the most used language for the 8th year, with 67.7% of people choosing it. With this came up several javascript frameworks for frontend, backend development, or even testing.

And one such framework is Vue.Js. It is used to build simple projects and can also be advanced to create sophisticated apps using state-of-the-art tools. Beyond that, some other solid reasons give Vuejs a thumbs up for responsive web application development.

Want to know them? Then follow this blog until the end. Through this article, I will describe all the reasons and benefits of Vue js development. So, stay tuned.

Vue.Js - A Brief Introduction

Released in the year 2014 for public use, Vue.Js is an open-source JavaScript framework used to create UIs and single-page applications. It has over 77.4 million likes on Github for creating intuitive web interfaces.

The recent version is Vue.js 2.6, and is the second most preferred framework according to Stack Overflow Developer Survey 2019.

Every Vue.js development company is widely using the framework across the world for responsive web application development. It is centered around the view layer, provides a lot of functionality for the view layer, and builds single-page web applications.

Some most astonishing stats about Vue.Js:

• Vue was ranked #2 in the Front End JavaScript Framework rankings in the State of JS 2019 survey by developers.

• Approximately 427k to 693k sites are built with Vue js, according to Wappalyzer and BuiltWith statistics of June 2020.

• According to the State of JS 2019 survey, 40.5% of JavaScript developers are currently using Vue, while 34.5% have shown keen interest in using it in the future.

• In Stack Overflow's Developer Survey 2020, Vue was ranked the 3rd most popular front-end JavaScript framework.

Why is Vue.Js so popular?

• High-speed run-time performance
• Vue.Js uses a virtual DOM.
• The main focus is on the core library, while the collaborating libraries handle other features such as global state management and routing.
• Vue.JS provides responsive visual components.

Top 7 Reasons to Choose Vue JS for Web Application Development

Vue js development has certain benefits, which will encourage you to use it in your projects. For example, Vue.js is similar to Angular and React in many aspects, and it continues to enjoy increasing popularity compared to other frameworks.

The framework is only 20 kilobytes in size, making it easy for you to download files instantly. Vue.js easily beats other frameworks when it comes to loading times and usage.

Take a look at the compelling advantages of using Vue.Js for web app development.

#1 Simple Integration

Vue.Js is popular because it allows you to integrate Vue.js into other frameworks such as React, enabling you to customize the project as per your needs and requirements.

It helps you build apps with Vue.js from scratch and introduce Vue.js elements into their existing apps. Due to its ease of integration, Vue.js is becoming a popular choice for web development as it can be used with various existing web applications.

You can feel free to include Vue.js CDN and start using it. Most third-party Vue components and libraries are additionally accessible and supported with the Vue.js CDN.

You don't need to set up node and npm to start using Vue.js. This implies that it helps develop new web applications, just like modifying previous applications.

The diversity of components allows you to create different types of web applications and replace existing frameworks. In addition, you can also choose to hire Vue js developers to use the technology to experiment with many other JavaScript applications.

#2 Easy to Understand

One of the main reasons for the growing popularity of Vue.Js is that the framework is straightforward to understand for individuals. This means that you can easily add Vue.Js to your web projects.

Also, Vue.Js has a well-defined architecture for storing your data with life-cycle and custom methods. Vue.Js also provides additional features such as watchers, directives, and computed properties, making it extremely easy to build modern apps and web applications with ease.

Another significant advantage of using the Vue.Js framework is that it makes it easy to build small and large-scale web applications in the shortest amount of time.

#3 Well-defined Ecosystem

The VueJS ecosystem is vibrant and well-defined, allowing Vue.Js development company to switch users to VueJS over other frameworks for web app development.

Without spending hours, you can easily find solutions to your problems. Furthermore, VueJs lets you choose only the building blocks you need.

Although the main focus of Vue is the view layer, with the help of Vue Router, Vue Test Utils, Vuex, and Vue CLI, you can find solutions and recommendations for frequently occurring problems.

The problems fall into these categories, and hence it becomes easy for programmers to get started with coding right away and not waste time figuring out how to use these tools.

The Vue ecosystem is easy to customize and scales between a library and a framework. Compared to other frameworks, its development speed is excellent, and it can also integrate different projects. This is the reason why most website development companies also prefer the Vue.Js ecosystem over others.

#4 Flexibility

Another benefit of going with Vue.Js for web app development needs is flexibility. Vue.Js provides an excellent level of flexibility. And makes it easier for web app development companies to write their templates in HTML, JavaScript, or pure JavaScript using virtual nodes.

Another significant benefit of using Vue.Js is that it makes it easier for developers to work with tools like templating engines, CSS preprocessors, and type checking tools like TypeScript.

#5 Two-Way Communication

Vue.Js is an excellent option for you because it encourages two-way communication. This has become possible with the MVVM architecture to handle HTML blocks. In this way, Vue.Js is very similar to Angular.Js, making it easier to handle HTML blocks as well.

With Vue.Js, two-way data binding is straightforward. This means that any changes made by the developer to the UI are passed to the data, and the changes made to the data are reflected in the UI.

This is also one reason why Vue.Js is also known as reactive because it can react to changes made to the data. This sets it apart from other libraries such as React.Js, which are designed to support only one-way communication.

#6 Detailed Documentation

One essential thing is well-defined documentation that helps you understand the required mechanism and build your application with ease. It shows all the options offered by the framework and related best practice examples.

Vue has excellent docs, and its API references are one of the best in the industry. They are well written, clear, and accessible in dealing with everything you need to know to build a Vue application.

Besides, the documentation at Vue.js is constantly improved and updated. It also includes a simple introductory guide and an excellent overview of the API. Perhaps, this is one of the most detailed documentation available for this type of language.

#7 Large Community Support

Support for the platform is impressive. In 2018, support continued to impress as every question was answered diligently. Over 6,200 problems were solved with an average resolution time of just six hours.

To support the community, there are frequent release cycles of updated information. Furthermore, the community continues to grow and develop with backend support from developers.



Wrapping Up

VueJS is an incredible choice for responsive web app development. Since it is lightweight and user-friendly, it builds a fast and integrated web application. The capabilities and potential of VueJS for web app development are extensive.

While Vuejs is simple to get started with, using it to build scalable web apps requires professionalism. Hence, you can approach a top Vue js development company in India to develop high-performing web apps.

Equipped with all the above features, it doesn't matter whether you want to build a small concept app or a full-fledged web app; Vue.Js is the most performant you can rely on.

Original source

 

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Luna  Mosciski

Luna Mosciski

1600583123

8 Popular Websites That Use The Vue.JS Framework

In this article, we are going to list out the most popular websites using Vue JS as their frontend framework.

Vue JS is one of those elite progressive JavaScript frameworks that has huge demand in the web development industry. Many popular websites are developed using Vue in their frontend development because of its imperative features.

This framework was created by Evan You and still it is maintained by his private team members. Vue is of course an open-source framework which is based on MVVM concept (Model-view view-Model) and used extensively in building sublime user-interfaces and also considered a prime choice for developing single-page heavy applications.

Released in February 2014, Vue JS has gained 64,828 stars on Github, making it very popular in recent times.

Evan used Angular JS on many operations while working for Google and integrated many features in Vue to cover the flaws of Angular.

“I figured, what if I could just extract the part that I really liked about Angular and build something really lightweight." - Evan You

#vuejs #vue #vue-with-laravel #vue-top-story #vue-3 #build-vue-frontend #vue-in-laravel #vue.js

sophia tondon

sophia tondon

1618971133

Top 10 VueJS Development Companies To Know In 2021-22

Vue.js is one of the most used and popular frontend development, or you can say client-side development framework. It is mainly used to develop single-page applications for both web and mobile. Famous companies like GitLab, NASA, Monito, Adobe, Accenture are currently using VueJS.

Do You Know?

Around 3079 companies reportedly use Vue.js in their tech stacks.
At GitHub, VueJS got 180.9K GitHub stars, including 28.5K GitHub forks.
Observing the increasing usage of VueJS and its robust features, various industry verticals are preferring to develop the website and mobile app Frontend using VueJS, and due to this reason, businesses are focusing on hiring VueJS developers from the top Vue.js development companies.

But the major concern of the enterprises is how to find the top companies to avail leading VueJS development service? Let’s move further and know what can help you find the best VueJS companies.

Read More - https://www.valuecoders.com/blog/technology-and-apps/top-10-vuejs-development-companies/

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Top VueJS App Development Company in USA

AppClues Infotech is the best & most reliable VueJS App Development Company in USA that builds high-quality and top-notch mobile apps with advanced methodology. The company is focused on providing innovative & technology-oriented solutions as per your specific business needs.

The organization’s VueJS developers have high experience and we have the capability of handling small to big projects. Being one of the leading mobile app development company in USA we are using the latest programming languages and technologies for their clients.

Key Elements:

· Total year of experience - 8+

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VueJS Development Services by AppClues Infotech

· Custom VueJS Development

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· Web Application Development

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· SPA (Single Page App) Development

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Why Hire VueJS Developers from AppClues Infotech?

· Agile & Adaptive Development

· 8+ Years of Average Experience

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If you have any project ideas for VueJS app development then share your requirements with AppClues Infotech to get the best solution for your dream projects.

For more info:
Share Yoru Requirements: https://www.appcluesinfotech.com/contact-us/
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**

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