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Vue JS Guide: a thorough introduction to Vue JS

Omji Mehrotra By Omji Mehrotra | July 9, 2020
vue.js guide

In the present world of programming, JavaScript frameworks and libraries are one of the most essential tools that developers depend upon.

Even with time, the developers are becoming more and more inclined to JavaScript with the addition of dynamic, full web apps and traditional desktop applications.

As a result, the programming world is changing and mobile app developers are embracing new frameworks to build top-notch apps. One major tool that is gaining popularity is the Vue JS framework that we will cover in this Vue JS tutorial.

Vue means and pronounced as the view is a French equivalent that is used for front-end development. It is an open-source progressive framework that is used for building single-page and user interfaces applications.

It is one of the popular JavaScript frameworks that is used by the developers and is increasing with a huge growth rate. According to Github, till June 2020, there were 1,67,000 stars for Vue JS that was only 36,700 in 2017.

These numbers are capable of giving a glimpse into the popularity of the Vue JS world. The major factor of why Vue JS is increasing in popularity is its incrementally adaptable architecture and excessive advanced features such as build tooling and state management.

Before moving forward to understand Vue JS, let us understand JavaScript first. 

What is JavaScript Front End Framework?

Another aspect added in the Vue js guide is the connection between JavaScript and Vue.

For modern applications development, JavaScript framework is the blessing with the addition of Angular, React, Vue, and so on. It is the most powerful open-source platform that helps in the development of mobile, web, and desktop applications.

In addition to this, it also creates interaction with the DOM (Document Object Model) and browsers. The framework makes it a bit easy instead to develop upon the APIs that help in building complex systems, manipulate elements, write an app, interact with developers, declarative define, and whatnot.

JavaScript is used to build libraries such as Mootools and JQuery. And then comes the framework including AngularJS, Knockout, Backbone, and Ember on which websites depend upon. This was followed by another set of frameworks that includes Angular, React, and Vue.

To get a better understanding, it is best to go through the Frontend JavaScript Frameworks guide. If you want to know more about the frameworks and their differences with each other, please check.

Here are the few brands that are using apps built on JavaScript.

apps built suing javascript

What is Vue JS?

To help you understand Vue JS, it is essential to know all the aspects that are mentioned in the Vue js guide.

Vue JS, as mentioned earlier, is an open-source framework that is used for mobile and web application development. In the Model View Controller (MVC), Vue is the middle layer that is used in the JavaScript platform.

The major reason that distinguishes JavaScript frameworks with Vue JS is that there is no need to rewrite the apps that already exist and the elimination of complete buy-in. This is due to the addition of a specific set of conventions in Vue JS.

All Vue JS requires is its easy adoption with a script tag only. In addition to this. Vue JS is an easy platform to work smoothly for a complete view layer as per the requirements. The Vue JS developers also don’t have to worry about learning npm, webpack, or Babel to start using Vue JS.

The iOS, web, cross-platform, and android app developers can easily approach it since it is a similar platform as JavaScript, CSS, and HTML. Mobile app developers even consider it as jQuery that uses the script tag to develop an app.

It is extremely approachable and can be adopted easily with feature-rich frameworks and libraries. There are a number of libraries that are used by the Vue Developers. To name a few, we have summed up a few in the guide to Vue js.

  • VuePress – It is the best tool for static site generators. 
  • vue-dummy – It is used for the images and placeholders.
  • Vuetify – Material Design is used in the Vue JS that works well with the UI components library.
  • Gridsome – The static sites framework can use this tool for data management with GraphQL.
  • Vue Apollo – GraphQL is used to integrate it with Vue for easy use.
  • Quasar – It depends upon the single codebase for hybrid mobile apps, PWAs, and SPAs.

With the introduction to vuejs explained, here are a few apps that are built using Vue JS.

apps built using vue.js

Features of Vue JS

Vue JS is designed as per the requirements and is incrementally adoptable by the developers. As mentioned earlier, Vue JS focus is mainly on the view part of MVC that allows developers to integrate with the libraries easily.

It also includes some supporting libraries and modern tooling that allows developers to power up the applications that are single-page yet complex. It includes a number of features that make it a vital framework for web app development.  To help you understand, here is a small glimpse into the Vue JS tutorial.

#1 Vue Templates

The HTML-based template syntax is used in the Vue ecosystem to bind DOM rendering using the instance data. HTML parsers can also use these templates for parsing and spec-compliant browsers that can be compiled into DOM render functions. 

#2 Reactivity System

Vue JS is not just about templates but also the reactivity system makes it a vital aspect for developers. This is due to the use of JavaScript objects that makes it simple for the developers that can also optimize re-rendering. The reactive dependencies are tracked by all the components during rendering. This helps the components to know when to render or re=render the system. 

#3 Vue Components

Vue JS components are the perfect extension of HTML elements that help in encapsulating the reusable code. In addition to this, these are custom elements that help the compiler in the code to work at the highest level. To make it understandable, the component is a predefined option in the Vue instance. 

#4 Handling URLs

In order to handle URLs, Vue routing is used in JavaScript coding. This displays the address bar content and synchronizes it. In simple words, when the user clicks on the page elements, the router alters the URL showcasing the right view.

URLs are the major part of the Web that is different for all the pages. However, with the web apps in trends, the developers are breaking the interaction with URLs and updating them manually using an API that one must be aware of as the introduction to vuejs.

#5 Transitions & Animations

Another essential feature of Vue JS is the use of transition effects that are used while inserting, updating, or removing from DOM. this can be achieved with tools to:

  • Integrate JavaScript animation third-party libraries (Velocity.js)
  • Integrate CSS animation third-party libraries (Animate.css)
  • Using JavaScript during transition hooks to manipulate DOM
  • Applying classes automatically for CSS animation and transitions

When the elements are inserted or removed from transition components then:

  • In the case of JavaScript hooks in the transition components then it is known as the right timings.
  • Vue JS can detect easily whether the CSS animations or transitions are present in target elements. At the right timings, the CSS transitions can be removed or inserted. 
  • In case of no CSS transitions or animations, or JavaScript hooks, the DOM operations will straightaway execute for the insertion or remove on the next frame. 

#6 Support Library

There are different libraries that are included in Vue JS development. To sum a few of them, here is a small part of the Vue JS tutorial.

  • Vue-cli – For Single Page Applications, it is used for scaffolding ambitious as an official CLI. 
  • Vuex – For the Vue JS apps, it is used as the state management library and pattern that work as a centralized store. 
  • Vueify? – This transforms the single file into the browserify for easy access. 
  • Vue-router – It is integrated with Vue JS core to develop the applications in an easy and simple manner. The router is used for Single Page Application development. 
  • Vue-loader – Single-File Components (SFCs) format is used for webpack.
  • Vue-class-component – It is used for the class-based API using TypeScript decorator
  • Vue-test-utils – It is the best tool that is used for the testing of the application
  • Vue-devtools – This option is used for the browser DevTools extension that works standalone or with the web browsers with the Vue Dev tools.

Why Developers go for Vue JS?

The main aspect that makes developers go for Vue JS is this adaptable nature that enhances the quality of its development. In addition to this, the core layer of the MVC is controlled in the Vue giving the best experience and easy integration.

Here are the major reasons that make Vue JS an ideal platform for developers in the Vue JS tutorial for better and clear understanding.

#1 Easy to Use & Integration

Vue JS is extremely easy to use with the JS code. All the developers need to do is include one line code as :

vue.js syntax

It is also one of the major languages that are easy to learn by the developers and offer easy documentation and syntax. The developers that work around jQuery and AngularJS can easily use Vue JS that is easy to understand.

In addition to this, the developers can integrate Vue JS easily or use it as a standalone project with other libraries. 

Read More – Introduction to Angular

#2 Composable Components

As another aspect of the guide to Vue js, the composable component is a vital factor. There are a number of components that are supported in the Vue JS making the development easier. It uses the HTML tags that can help in creating child components and on the DOM. Due to this, developers can easily develop large-scale applications that include reusable, self-contained, and small components.

It is also connected with web components spec that is similar to custom elements. This makes the modeling of the Vue components easier after the spec. The reusability of this framework makes it ideal for large and complex applications. Developers can easily compose, define, and trigger data communication. 

#3 Performance

In terms of performance, Vue JS is the smallest and fastest framework. Hence, for the front end development, the developers can use and download it easily offering the highest performance. This makes it one of the most essential mobile app development frameworks.

#4 Reactive Data-Binding

The data-driven concept is a vital addition to Vue JS app development that reflects the data state in DOM. DOM updates are triggered automatically as soon as any data changes are observed. If the view and data declaration is done in the template, then you can easily depend upon the Vue JS to manage all the other aspects. 

#5 Virtual DOM

architecture of vue.js app

As mentioned earlier, DOM is a major part of the VueJS world. It helps the codes to communicate with HTML hence working as the interface. It establishes a standard between a programming language and HTML making it easy to send and receive information from HTML.

In certain cases, if the small elements in the CSS setting are changed then the whole tree needs to be rebuilt. However, Vue JS normally creates a copy in the virtual DOM instead of the browser DOM. to understand it better, know Clouds Apps Vs Web Apps, to know the major part of Web apps with DOM.

Once done, the changes are noted to be calculated between the real and virtual DOM to ensure that it is done once. As a result, no redundant data is needed which will eventually increase the overall performance. It is another major aspect of the Vue JS tutorial that one must be aware of. 

#6 High Speed, Low Size

The core library of Vue.KS is focused on the view aspects and is of very small sizes that enhance overall performance automatically. It allows comprehensive operation performance for the developers using plugins such as StateManager, Ajax, Router, etc. 

#7 DevTools

The Vue Dev tools include the frontend side development with console.log, alert, debug, and so on. It is used in the model to find bugs and errors that were initially a waste of time when data was logged. Vue JS with the right plugins helps in changing and viewing the data for the components since it can be accessed easily under the Developer Tools option

#8 Vue Instance

The application uses the Vue instance with the common code as shown below in the Vue JS tutorial

vue instance

This is the Vue js example of the instance to help you understand it working. The patterns are much similar to that of MVVM but are not exactly the same. It helps in creating objects as per the behavior of Vue applications. Even the objects inside the Vue instance are reactive in nature due to which it is used by mobile app development company.

#9 Props

The resealable nature of the code of the application as components is divided to pass on the data from parent to child components. Hence, props are used to ensure that components transfer is done in the right manner while also adding validation to the props. 

#10 Slots

Whereas the Slots are a bit different from the props since it works on either style or content deviations. It is easy to pass on the styles and content in the props followed by an easy switch to create versions.

But what about reusing the components and then populating them with the functionalities and data same. This can be done using the <slot></slot> elements that are the part of child components. This can easily populate with the Vue js example as:

vue.js slots

#11 Two-Way Binding

In this, the data is bound together in the JS and DOM. However, developers can easily alter the data with the right input in the DOM. in case of any span in the data, the JS variable is used that helps in updating the data when the input is made. It holds a deeper part in the Vue JS tutorial helping developers to code in the right manner. 

#12 Vue Syntax

The major reason for using Vue JS is due to its syntax that is based on HTML programming language that binds the instance data in the rendering DOM. This makes it easy to parse as mentioned earlier. In addition to this, Virtual DOM also uses the conception of Vue JS for function rendering. 

Conclusion

This Vue JS tutorial is just a glimpse into the world of Vue JS that is now famously used by the developers. It is used via Vue CLI or Static HTML for the development of the app. After this, you will be able to understand the data, components, conditionals, building, form handling, etc.

It is easy to build the mobile app with Vue JS for front-end to the DOM routing. Vue JS works amazingly well with proper integration with Angular, React, and Knockout like frameworks. This helps in building more beautiful and better UI for the apps with HTML and CSS.

If you want to build the apps on Vue JS then feel free to get in touch and we will help your business.

Frequently Asked Question

Q- #1 What are the different tutorials to start learning Vue JS?

Vue JS is the front-end framework that is used to develop experience and enhance the mobile app. It helps the developers to offer the best apps with a combination of the right framework.to learn Vue JS, the developers can go through:
Udemy – VueJS 2 – The Complete Guide
Udemy – Vue JS 2: From Beginner to Professional

Q- #2 Can you explain a bit about practices and tips to use Vue JS?

The components are used in the Vue JS code for the route changes and custom handler. However, the direct manipulation of DOM won’t be possible in some cases where it is essential to add $refs for manipulating component data. For better performance, mobile app developers can use:
Functional components
Loop items
Code splitting
Component registration
SVG
Lazy loading

Q- #3 Why Vue JS over Vanilla JavaScript?

The fact is that JavaScript offers dynamic web pages and with addition to vanilla JS it offers low maintainability and higher code complexity. This makes it ideal for the developers since it updates DOM elements and manages responses.
But it is not ideal for the large projects due to its more manual work and as a result, developers depend upon Vue JS with the addition of React and Angular. The progressive JS framework is performant, versatile, and approachable which makes it easy to migrate the components.

Omji Mehrotra
Omji Mehrotra

Co-Founder and AVP Technology at Appventurez. An accomplished Android and React Native developer who is a fan of clean and optimized code, he is a passionate team builder having smart project managerial skills and has a deep love to provide end to end solution.

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