VueJS is an open-source progressive JavaScript framework used to develop interactive web interfaces. It is one of the famous frameworks used to simplify web development. VueJS focuses on the view layer. It can be easily integrated into big projects for front-end development without any issues.
The installation for VueJS is very easy to start with. Any developer can easily understand and build interactive web interfaces in a matter of time. VueJS is created by Evan You, an ex-employee from Google. The first version of VueJS was released in Feb 2014. It recently has clocked to 64,828 stars on GitHub, making it very popular.
Features
Virtual DOM
VueJS makes use of virtual DOM, which is also used by other frameworks such as React, Ember, etc. The changes are not 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 HTML attributes, change the style, assign classes with the help of a binding directive called v-bind available with VueJS.
Components
Components are 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.
Animation/Transition
VueJS provides various ways to apply a transition to HTML elements when they are added/updated or removed from the DOM. VueJS has a built-in transition component that needs to be wrapped around the element for the transition effect. We can easily add third party animation libraries and also add more 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. Vue 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 making the code simple and fast.
Routing
Navigation between pages is performed with the help 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 build and compile the project easily using vue-cli.
Comparison with Other Frameworks
Now let us compare VueJS with other frameworks such as React, Angular, Ember, Knockout, and Polymer.
