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VueJs: Everything You Need to Know About…

Vue.js is a progressive front-end javascript framework developed by Evan You, which allows you to develop interactive web interfaces efficiently and easily. It focuses on a view section of the application and it is used to build incredibly capable and robust single-page applications (SPA). VueJs allows you to import or integrate existing projects, libraries, and tools. This framework is like Angular and React but much faster and lighter. The installation of VueJS is very simple, and anyone can easily understand and start creating their user interfaces.

Let’s understand what is a front-end JavaScript framework(s)?

Web Development Serivce

If you’re unaware of what a JavaScript framework is, Vue is the perfect first encounter to start with. A JavaScript framework helps us to create modern and complex applications. Nowadays modern JavaScript applications are mostly used on the Web, but also power a lot of Desktop and Mobile applications.

Until the early 2000s, browsers didn’t have the capabilities they have now. They were a lot less powerful, and building complex applications inside them were not feasible performance-wise. The tooling was not even something that people thought about.

Everything changed when Google unveiled Google’s applications such as Maps and GMail, two applications that ran inside the browser.  Ajax made asynchronous network requests possible. Over time, developers started building on top of the Web platform, while engineers worked on the platform itself — browsers, the Web standards, the browser APIs, and the JavaScript language.

Libraries like jQuery and Mootools were the primary big projects designed upon JavaScript and were massively popular for a while. They provided API to interact with the browser and provided workarounds for bugs and inconsistencies among the various browsers to handle it perfectly.

Frameworks like BackboneJs, EmberJs, KnockoutJs, and AngularJS were the first wave of modern JavaScript frameworks. The second wave, which is the current one, has React, Angular, and Vue as its main actors.
Note that jQuery, Ember and the other projects I mentioned are still being heavily used, actively maintained, and millions of websites rely on them.

That said, techniques and tools evolve, and as a JavaScript developer, you’re now likely to be required to know React, Angular or Vue rather than those older frameworks. Frameworks abstract the interaction with the browser and also the DOM. Instead of manipulating elements by referencing them in the DOM, we declarative define and interact with them, at a higher level.

Using a framework is like using the C or C++ programming language instead of using the Assembly language to write system programs. It’s like using a computer to write a document instead of using a typewriter. It’s like having a self-driving car instead of driving the car yourself.

Well, not that way, but you get the idea. Instead of using low-level APIs offered by the browser to manipulate elements, and building hugely complex systems to write an application, you use tools built by very smart people that make our life easier.

Application software development is one of the most popular businesses being practiced both at an individual as well as enterprise levels. Different tools and techniques are being used by the developers for launching successful applications. A lot of software development technologies are also being used by the software developers to make the applications faster, more attractive and user-friendly. Vue.js progressive framework is one of those new software technologies that are being widely used across the world for web development. Vue.js is actually a front-end JavaScript progressive framework with various optional tools for building user interfaces.

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Advantages
Here’s are the advantages of using Vue.js technology in web development.

1- Small In Size
The success of any front-end JavaScript framework depends on its size. The smaller the size is, the more it will be used. One of the best benefits of Vue.js is its small size. The size of this framework is 18–21KB and it takes no time for the user to transfer and use it. This does not mean that it has a low speed because of the small size. Instead, it beats all the popular and large frameworks like React.js, Angular.js, and Ember.js.

2- Very Easy to Understand and Develop Applications
One of the reasons for the popularity of this framework is that it is quite easy to understand. The user will simply add Vue.js to his web project because of its simple structure. Both the little moreover as massive scales templates may be developed through this framework that saves a great deal of your time. In case of any downside, the user will simply trace the blocks with errors. All this is because of its simple structure.

3-Simple Integration
Vue.js is also popular among the web developers as a result of it facilitates them to integrate with the prevailing applications. This is as a result of it’s based on JavaScript framework and can be integrated into different applications designed on JavaScript. This means that it’s helpful for developing new web applications as moreover as altering the pre-existing applications. This integration is possible as a result of Vue.js has parts for everything.

4-Detailed Documentation
Developers always wish to use the framework with elaborate documentation as a result of it’s always simple for them to write their initial application. The documentation and development with Vue.js is so comprehensive that any user who knows a little about JavaScript and HTML can develop his own application or web page.

5-Flexibility
Flexibility is another advantage of Vue.js. It allows the user to write down his template ( view part ) in hypertext mark-up language file, JavaScript file, and pure JavaScript file using virtual nodes. This flexibility also makes it simple to grasp for the developers of React.js, Angular.js, and any other new JavaScript framework. Vue.js has proved a lot useful within the development of these easy applications that run directly from browsers.

6-Two-Way Communication
And last but not least Vue.js also facilitates two-way data-binding because of its MVVM architecture which makes it quite easy to handle HTML blocks. In this respect, it seems very close to AngularJs and Angular which also speeds up HTML blocks.

In the end, we will say that Vue.js has clear advantages over all the earlier frameworks like AngularJs and React.js. In short, it combines the peculiar features of all the older frameworks. We at ProximityCR have lots of experience working with bit different JS Frameworks and that we can tell you that we actually like Vue.JS and it’s here to stay.

The popularity of Vue
How popular is Vue.js?

Vue had:

7,600 stars on GitHub in 2016

36,700 stars on GitHub in 2017

And it’s quite 100,000+ stars on GitHub, as of June 2018.

Its npm download count is growing every day, and now it’s at ~350,000 downloads per week.

I would say Vue is extremely popular, given those numbers.

In relative terms, it’s around the same numbers of GitHub stars as React, that was born years before.

Numbers are not everything, of course. The impression I have of Vue is that developers like it.

A key purpose in a time of the rise of Vue has been the adoption within the Laravel ecosystem, a hugely popular PHP web application framework. But since then it has become widespread among many other development communities.

Why developers love VueJs
First, Vue is called a progressive framework. This means that it adapts to the needs of the developer. Other frameworks require a complete buy-in from a developer or team and often want you to rewrite an existing application because they require some specific set of conventions. Vue easily lands within your app with a simple script tag to start with, and it can grow along with your needs, spreading from 3 lines to managing your entire view layer.

You don’t get to know about webpack, Babel, npm or anything to get started with Vue. But once you’re prepared, Vue makes it simple for you to rely on them. This is one great selling point, especially in the current ecosystem of JavaScript front-end frameworks and libraries that tend to alienate newcomers and also experienced developers that feel lost in the ocean of possibilities and choices.

Vue.js is maybe the foremost approachable front-end framework around. Some individuals decision Vue the new jQuery, because it easily gets in the application via a script tag, and gradually gains space from there. Think of it as a compliment, since jQuery dominated the Web in the past few years, and it still does its job on a huge number of sites.

Vue was designed by choosing the simplest concepts of frameworks like Angular, React and Knockout, and by cherry-picking the simplest decisions those frameworks created. And by excluding some less brilliant ones, it kind of started as a “best-of” set and grew from there.

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Where does Vue.js position itself within the frameworks landscape?
The two elephants within the space, when talking concerning web development, area unit React and Angular. How will Vue position itself relative to those 2 huge and popular frameworks?

Vue was created by Evan You when he was working at Google on AngularJS (Angular 1.0) apps. It was born out of a need to create more performant applications. Vue picked some of the Angular templating syntaxes but removed the opinionated, complex stack that Angular required, and made it very performant.

The new Angular (Angular 2.0) also solved many of the AngularJS issues, but in very different ways. It also requires a buy-in to TypeScript which not all developers enjoy using (or want to learn).

What about React? Vue took several good ideas from React, most importantly the Virtual DOM. But Vue implements it with some type of automatic dependency management. This tracks which components are affected by a change of the state so that only those components are re-rendered when that state property changes.

In ReactJs, when a part of the state that affects a component changes, the component will be re-rendered. By default, all its children will be re-rendered as well. To avoid this you would like to use the ought toComponentUpdate methodology of every element and verify if that element should be re-rendered. This gives Vue a bit of an advantage in terms of ease of use, and out of the box performance gains.

One big difference between React is JSX. While you’ll technically use JSX in Vue, it’s not a popular approach and instead, the templating system is used. Any HTML file is a valid Vue template. JSX is very different from HTML and has a learning curve for people on the team that might only need to work with the HTML part of the app, like designers.

Vue templates are similar to mustache and Handlebars (although they differ in terms of flexibility). As such, they’re additionally acquainted with developers that already used frameworks like Angular and ember.

Again, this is part of the positive things about Vue, which saw this good pattern to React and borrowed it for its ecosystem. And whereas you’ll be able to use redux with Vue, Vuex is specifically tailored for Vue and its inner workings.

Vue is flexible, but the fact that the core team maintains two packages that are very important for any web app (like routing and state management) makes it a lot less fragmented than React.

You don’t need to choose or worry if that library you chose is going to be maintained in the future and will keep up with framework updates. Since they are official, they are the canonical go-to libraries for their niche (but you can choose to use what you like, of course).

One thing that puts Vue in a different bucket compared to React and Angular is that Vue is an indie project: it’s not backed by a massive corporation like Facebook or Google. Instead, it’s utterly backed by the community, that fosters development through donations and sponsors. This makes sure the roadmap of Vue isn’t driven by a single company’s agenda.

VueJS is an open-source front-end progressive JavaScript framework used to develop interactive web interfaces. It is one of the known frameworks used to simplify web development. VueJS focusses on the view layer. It can be simply integrated into massive projects for front-end development without any problems.

The installation for VueJS is incredibly simple to start out with. Any developer will simply understand and build interactive web interfaces in a matter of time. VueJS is Design and Developed by Evan You, an ex-employee from Google. The VueJS v 1.0 was released on Feb 2014. It recently has clocked to more than 64,828 stars on GitHub, making it very popular.

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Features
Following are the features available with VueJS

Features Of Vuejs

Virtual DOM
VueJS makes easy DOM manipulation with the use of virtual DOM, which is also used by other frameworks such as React, Ember, etc. The changes aren’t made to the DOM, instead, a replica of the DOM is created which is present in the form of JavaScript data structures. Whenever any changes are to be made, they are made to the JavaScript data structures and the latter is compared with the original data structure. The final changes are then updated to the real DOM, which the user will see changes. This is good in terms of optimization, it is less expensive and the changes can be made at a faster rate.

Data Binding
The data binding feature helps manipulate or assign values to markup language attributes, amendment the fashion, assign categories with the assistance of binding directive referred to as v-bind on the market with VueJS.

Components
Components are building blocks as well as one of the important features of VueJS that helps create custom elements, which can be reused in HTML.

Event Handling
V-on is the attribute added to the DOM elements to listen to the events in VueJS to improve app performance.

Animation/Transition
VueJS provides different ways to apply a transition to HTML elements when they are added/updated or removed from the DOM. VueJS incorporates a built-in transition component that must be wrapped around the part for the transition effect. We can simply add third party animation libraries and also add a lot of interactivity to the interface.

Computed Properties
This is one of the important features of VueJS. It helps to listen to the changes made to the UI elements and performs the necessary calculations. There is no need for additional coding for this.

Templates
VueJS provides HTML-based templates that bind the DOM with the Vue instance data ( binds with app data ). Vue manipulates and compiles the templates into Virtual DOM Render functions. We can make use of the template of the render functions and to do so we have to replace the template with the render function.

Directives
VueJS has built-in directives such as v-if, v-else, v-show, v-on, v-bind, and v-model, which are used to perform various actions on the frontend.

Watchers
Watchers are applied to data that changes. For example, form input elements. Here, we don’t have to add any additional events. Watcher takes care of handling any data changes creating the code easy and fast.

Routing
Navigation between pages is performed with the use of vue-router.

Lightweight
VueJS script is very lightweight and the performance is also very fast.

Vue-CLI
VueJS can be installed at the command line using the vue-cli command-line interface. It helps to create and compile the project simply using vue-cli.

Comparison with Other Frameworks
Now let us compare VueJS with other frameworks such as React, Angular, Ember, Knockout, and Polymer.

VueJS v/s React
Virtual DOM:
Virtual DOM is a virtual representation of the Document Object Model tree. With virtual DOM concept, a JavaScript object is created which is the same as the real DOM in JavasScript. Any time a change needs to be made to the DOM, a new JavaScript object is created and the changes are made. Later, both the JavaScript objects are compared and the final changes are updated in the real DOM.
“VueJS and React both use virtual DOM, which makes it faster.”

Template v/s JSX
VueJS uses HTML, js, and CSS separately. It is very easy for a beginner to understand and adopt the VueJS style. The template-based approach in components for VueJS is very easy.
React uses jsx approach. Everything is JavaScript for ReactJS. HTML and CSS are all part of JavaScript.

Installation Tools
React uses the CLI command to create react app and VueJS use vue-cli /CDN/npm. Both are very easy to use and the project is set up with all the basic requirements. React requires the webpack for the build, whereas VueJS does not. We can start the development with VueJS coding within jsfiddle or codepen using the CDN library.

Popularity
React is popular than VueJS. The job opportunity with React is more than VueJS. There is a big name behind React i.e. Facebook which makes it more popular. Since React uses the core and adv. concepts of JavaScript, it uses the best practice of JavaScript. One who little bit works with React will definitely be really good with all the JavaScript concepts.

VueJS is a developing framework. Presently, the job opportunities with VueJS framework are less in comparison to React According to a survey, nowadays many people are adapting to VueJS, which can make it more popular in comparison to React and Angular. There is a good community working on the different features of VueJS. The Vue-router is maintained by this huge community with regular updates.

VueJS has taken the good parts from Angular and React and has built a powerful library. VueJS is much quicker as compared to React/Angular because of its light-weight library.

VueJS v/s Angular
Similarities
VueJS has a lot of similarities with Angular. Directives such as v – if, v – for are almost similar to ng If, ng For of Angular. They both have a command-line interface for project installation and to build it. VueJS uses Vue – cli and Angular uses angular-cli. Both offer one way and two-way data binding, server-side rendering, etc.

Complexity
Vuejs is very easy to learn and start with. As discussed earlier, a beginner can take the CDN library of VueJS and get started in codepen and jsfiddle.

For Angular, we need to go through a series of steps for installation and it is a little difficult for beginners to get started with Angular. It uses TypeScript which is a bit difficult for coding which is difficult for people coming from core JavaScript background. However, it is easier to learn for users belonging to Java and C# background.

Performance
To decide the performance, it is up to the users. VueJS file size is much lighter than Angular.

Popularity
At present, Angular is more popular than VueJS. A lot of organizations nowadays use Angular, making it very popular. Job opportunities are also more for candidates experienced in Angular. However, VueJS is now rapidly taking up the place in the market and can be considered as a good competitor for Angular and React.

Dependencies
Angular provides a lot of built-in features. We have to import the required modules and get started with it, for example, @angular/animations, @angular/form. VueJS does not have all the built-in features as Angular and needs to depend on third-party libraries to work on it.

Flexibility
VueJS can be easily merged or implement with any other project without any issues. Angular will not be that easy to start working with any other existing project as easy as Vue.

Backward Compatibility
We had AngularJS, Angular2 and now Angular4. AngularJS and Angular2 have a vast difference. Project application developed in AngularJS cannot be converted to Angular2 because of the core differences.The recent version of VueJS is 2.0 and it is good with backward compatibility. It provides good documentation and guide-lines, which is very easy to understand.

Typescript
Angular uses TypeScript for its coding. Users need to have good knowledge of Typescript to get started with Angular Framework. However, we can start with VueJS coding easily anywhere in project or jsfiddle or codepen using the CDN library. We can work with standard JavaScript and ECMAScript, which is very easy to start with.

VueJS v/s Ember
Similarities
Ember provides Ember command-line tool, i.e. ember-cli for easy installation and compiling for Ember projects.VueJS has also a command-line interface tool vue-cli to start and build projects. They both have features such as components, templates, and router which makes them very rich as the UI framework.

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VueJS v/s Knockout
Knockout provides good browser support. It is supported on the lower version of the IE whereas VueJS is not supported on IE8 and below. Knockout development has slowed down over time. There is not a lot of quality for a similar in recent times.
On the other hand, VueJS has started gaining popularity with the VueJs framework team providing regular updates.

VueJS v/s Polymer
Polymer library has been developed by Google. It is used in many Google projects such as Google I/O, Google Earth, Google Play Music, etc. It offers data binding ( one way and two way ) and computed properties similar to VueJS.

Polymer custom element definition comprises plain JavaScript and CSS, element properties, lifecycle callbacks, and JavaScript methods. In comparison, VueJS allows to easily use JavaScript and HTML and CSS. Polymer uses net part options and needs polyfills for browsers, that doesn’t support these options. VueJS does not have such dependencies and works fine in all browsers from IE9+.

Vue as a library
There are several ways in which you can use or implement Vue into your existing web project. Let’s start with the simplest one (which you will probably not end up using a lot).

Most tutorials/articles will assume that you have some understanding of how to set up a development environment in which you will use things like npm, webpack to set up your project – and while this is ideal because of what you get out of the box – we can start with a much simpler beginner-friendly approach. The reliable old script tag.

Go ahead and fire up your favorite code editor, and create a new file called index.html. (If you don’t have one yet, VS Code is a popular free choice.

Author:-
Manoj Patil Software Developer

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