What is the difference between Vue.js and React.js?

Vaibhav Kothia May 26, 2023 0 Comments

Vue.js and React.js are both popular JavaScript libraries used to build user interfaces.

Vue.js is a progressive framework that focuses on building user interfaces. It is designed to be incrementally adoptable, meaning that you can start using it without having to rewrite your existing code. Vue.js is also known for its simple syntax and easy integration with other libraries.

Example of Vue.js code:

export default {
data() {
return {
name: ‘World’
}
}
}

React.js is a JavaScript library for building user interfaces. It is component-based, meaning that you can create reusable components and build complex user interfaces. It is also known for its fast rendering and powerful developer tools.

Example of React.js code:

import React from ‘react’;

const App = () => {
return (

);
}

export default App;

What are the key features of Vue.js?

Vaibhav Kothia May 26, 2023 0 Comments

1. Virtual DOM: Vue.js uses a virtual DOM, which is a lightweight copy of the actual DOM. This allows for faster updates to the actual DOM since it only updates the parts of the DOM that have changed. For example, if a user changes a text field, only that text field is updated, rather than the entire page.

2. Reactive Data Binding: Vue.js allows for two-way data binding, which means that any changes made to the data in the application will be reflected in the view layer (and vice versa). For example, if a user changes a text field, the view layer will automatically update to reflect the new value.

3. Component-based Architecture: Vue.js allows developers to create custom components that can be reused throughout the application. This allows developers to create more efficient and maintainable code. For example, a custom “button” component can be created and reused throughout the application.

4. Routing: Vue.js provides a simple and flexible routing system that allows developers to easily switch between different views and components. For example, a user can navigate to different pages of the application by simply entering the URL in the browser.

5. Animations and Transitions: Vue.js provides an easy way to create animations and transitions. This allows developers to create smooth and engaging user experiences. For example, a button can be animated to grow or shrink when a user hovers over it.

What is the difference between a Presentational and Container component?

Vaibhav Kothia May 26, 2023 0 Comments

Presentational components are concerned with how things look. They usually receive data and callbacks exclusively via props. These components are usually written as functional components unless they need to use state or lifecycle methods.

Example:

const Button = (props) => {
return {props.text}
}

Container components are concerned with how things work. They are often stateful, as they tend to serve as data sources. These components are usually written as class components.

Example:

class ButtonContainer extends React.Component {
constructor(props) {
super(props);
this.state = {
text: ‘Click Me!’
}
}

handleClick = () => {
this.setState({
text: ‘You clicked!’
});
}

render() {
return
}
}

How does React handle user input?

Vaibhav Kothia May 26, 2023 0 Comments

React handles user input by using the onChange event handler. This event handler allows the user to input data, which is then stored and can be used to update the state of the application.

For example, if you had a form with an input field, you could use the onChange event handler to update the state of the application with the user’s input.

In the example below, we have a form with an input field and a button. When the user types something into the input field and clicks the button, the onChange event handler is triggered and the value of the input is stored in the state of the application.

function App() {
const [inputValue, setInputValue] = useState(”);

const handleChange = (e) => {
setInputValue(e.target.value);
}

return (

Submit

);
}

export default App;

What are the advantages of using React?

Vaibhav Kothia May 26, 2023 0 Comments

1. Easy to Learn: React is a very easy-to-learn library and its syntax is similar to HTML, making it easier for developers to pick up.

2. Reusable Components: React allows developers to create reusable components, which can be used again and again in different projects. For example, a search bar component can be used in multiple projects, saving developers time and effort.

3. Performance: React uses a virtual DOM which helps to make applications more performant. Instead of reloading the entire page when changes are made, React only updates the parts of the page that need to be changed, resulting in faster page loads.

4. Scalability: React is designed to scale up, making it ideal for large-scale applications.

5. Flexibility: React is highly flexible and can be used to build mobile applications as well as web applications.

What is the purpose of using React?

Vaibhav Kothia May 26, 2023 0 Comments

React is a JavaScript library used for building user interfaces. It is a declarative, efficient, and flexible JavaScript library for building user interfaces. It is used for creating single-page applications and mobile applications, as well as for creating complex user interfaces.

For example, when building a web page, React can be used to create components that can be reused throughout the page. React components can be used to create interactive elements such as buttons, menus, and forms. React also allows developers to create reusable components that can be used across multiple web pages. This makes it easier to maintain and update code, as well as reducing development time.

What are the controllers in AngularJS?

Vaibhav Kothia May 26, 2023 0 Comments

Controllers are the most important part of AngularJS. They are responsible for controlling the data of the application.

Controllers are defined using the ng-controller directive.

Example:

function MyController($scope) {
$scope.message = “Hello World!”;
}

What experience do you have with React Native?

Vaibhav Kothia May 26, 2023 0 Comments

I have been developing mobile applications with React Native for the past year. I have built applications for both iOS and Android platforms. I have experience with using the React Native framework to create custom components, implement navigation, and integrate with various APIs.

For example, I recently built an app for a customer that allows users to search for nearby restaurants. The app was built using React Native and integrated with a third-party API to retrieve the restaurant data. I also implemented a custom navigation system using React Navigation and Redux to manage the application state.

What are the different types of HTML tags?

Vaibhav Kothia May 26, 2023 0 Comments

1. Block-level tags: These tags create large blocks of content, such as paragraphs, headings, and divisions. Examples include

,

, and

.

2. Inline tags: These tags create small pieces of content, such as text, images, and links. Examples include , , and .

3. Container tags: These tags contain both block-level and inline elements. Examples include

,
, and
.

4. Metadata tags: These tags provide information about the HTML document, such as the document type, character set, and language. Examples include ,

Welcome to my page!

This is my first web page.

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