Earlene  Rowe

Earlene Rowe

1595548860

Easily switch to Composition API in Vue.js 3

The fact that Vue.js 3 already reached the alpha version made me think that… it’s time already for some Vue.js 3 tips!

The idea is to give you some tips related to new features you can find on Vue.js 3 as they get available. For now, we’ll focus on Composition API, one of the most game-changing features!

This first one is specially focused on showing you a basic step-by-step guide or cheatsheet to migrate object-api Vue.js components to use Composition API. In future tips you’ll also see how to apply certain new techniques this API allow us to do as well.

I’ll do that by showing you how to convert an Object-API-based component to use Composition API.

For that, let’s create a MoneyCounter.vue component that basically shows a money amount and allow us to add/substract quantities to it, implemented using the following code:

<template>
  <div>
    <h2>{{ formattedMoney }}</h2>
    <input v-model="delta" type="number">
    <button @click="add">Add</button>
  </div>
</template>

<script>
export default {
  data: () => ({
    money: 10,
    delta: 1
  }),
  computed: {
    formattedMoney() {
      return this.money.toFixed(2);
    }
  },
  mounted() {
    console.log("Clock Object mounted!");
  },
  methods: {
    add() {
      this.money += Number(this.delta);
    }
  },
  watch: {
    money(newVal, oldVal) {
      console.log("Money changed", newVal, oldVal);
    }
  }
};
</script>

#vue #vue.js #api #vue.js 3 #programming

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Easily switch to Composition API in Vue.js 3
Earlene  Rowe

Earlene Rowe

1595548860

Easily switch to Composition API in Vue.js 3

The fact that Vue.js 3 already reached the alpha version made me think that… it’s time already for some Vue.js 3 tips!

The idea is to give you some tips related to new features you can find on Vue.js 3 as they get available. For now, we’ll focus on Composition API, one of the most game-changing features!

This first one is specially focused on showing you a basic step-by-step guide or cheatsheet to migrate object-api Vue.js components to use Composition API. In future tips you’ll also see how to apply certain new techniques this API allow us to do as well.

I’ll do that by showing you how to convert an Object-API-based component to use Composition API.

For that, let’s create a MoneyCounter.vue component that basically shows a money amount and allow us to add/substract quantities to it, implemented using the following code:

<template>
  <div>
    <h2>{{ formattedMoney }}</h2>
    <input v-model="delta" type="number">
    <button @click="add">Add</button>
  </div>
</template>

<script>
export default {
  data: () => ({
    money: 10,
    delta: 1
  }),
  computed: {
    formattedMoney() {
      return this.money.toFixed(2);
    }
  },
  mounted() {
    console.log("Clock Object mounted!");
  },
  methods: {
    add() {
      this.money += Number(this.delta);
    }
  },
  watch: {
    money(newVal, oldVal) {
      console.log("Money changed", newVal, oldVal);
    }
  }
};
</script>

#vue #vue.js #api #vue.js 3 #programming

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

 

#vue js development company #vue js development company in india #vue js development company india #vue js development services #vue js development #vue js development companies

Access template refs in Composition API in Vue.js 3

You’ve seen in the last tip “Use old instance properties in Composition API in Vue.js 3” how to access instance properties in the new syntax.

However, our beloved this.$refs wasn’t included in the setup context object as you realized if you read the tip.

So, how can you work with template refs in Composition API?

It might be more simple than you think! The thing is, Vue.js unifies the concept of refs, meaning that you just need to use the ref() function you already know for declaring reactive state variables in order to declare a template ref as well.

#vue #vue.js #vue.js 3 #api

Create a i18n Plugin with Composition API in Vue.js 3

The way plugins are coded in Vue.js 3 with Composition API differ from traditional plugins. Traditional are used via a install function and added using Vue.use(plugin). They usually manipulate/extend the Vue prototype.

However, in Composition API plugins are non-manipulative and coded using an inject-provide pattern. For instance, you can create a i18n plugin like this:

// i18nPlugin.js
import { ref, provide, inject } from "@vue/composition-api";

const createI18n = config => ({
  locale: ref(config.locale),
  messages: config.messages,
  $t(key) {
    return this.messages[this.locale.value][key];
  }
});

const i18nSymbol = Symbol();

export function provideI18n(i18nConfig) {
  const i18n = createI18n(i18nConfig);
  provide(i18nSymbol, i18n);
}

export function useI18n() {
  const i18n = inject(i18nSymbol);
  if (!i18n) throw new Error("No i18n provided!!!");

  return i18n;
}

As you can see, the functions provide and inject are used to create the plugin instance and hold it in a dependency injection mechanism.

Check that we use ref for the locales, since we need the to be reactive.

If you’re not very familiar yet with Composition API, please read the tip to easily migrate to Composition API and how to use old instance properties to get a bit more in detail about it.

Then, once in the app you must initialize the plugin with the right configuration by using the provideI18n function. That’s usually done in the root App.vue component:

<script>
  import { provideI18n } from "./i18nPlugin";
  import HelloWorld from "./HelloWorld";

  export default {
    components: { HelloWorld },
    setup() {
      provideI18n({
        locale: "en",
        messages: {
          en: {
            hello_world: "Hello world"
          },
          es: {
            hello_world: "Hola mundo"
          }
        }
      });
    }
  };
</script>

#vue #vue.js #vue.js 3 #api #i18n

Oleta  Orn

Oleta Orn

1596144420

Use old instance properties in Composition API in Vue.js 3

In the last tip “Easily switch to Composition API in Vue.js 3” I explained how to migrate the basic parts of a Vue.js Object API component to the new Composition API.

However, that’s not all. What happens with all instance properties we used to have, such as this.$emitthis.$slotsthis.$attrs and so? They were on the this component instance, but there is no this in Composition API.

In the same line, in the last tip I didn’t use props, and you used to access them via this in the component instance. How the heck can you access it now?

The thing is, I haven’t explained the arguments of the setup function when using Composition API.

Effectively, the first parameter of the setup function receives all the component properties. Following the example from the last tip, let’s add two properties to use as the initial values for the money and delta local state variables:

export default {
  props: {
    money: {
      type: Number,
      default: 10
    },
    delta: {
      type: Number,
      default: 1
    }
  },
  setup(props) {
    const money = ref(props.money);
    const delta = ref(props.delta);

    // ...
  }
};

#vue #vue.js #vue.js 3 #api #javascript