What is the purpose of web frameworks like React, Angular, and Vue.js in modern web development?

Web frameworks are software libraries or structures that provide developers with pre-built tools, components, and conventions for creating web applications efficiently. These frameworks offer a structured approach to building web applications by simplifying common tasks and providing a foundation for organizing code, managing state, and handling user interactions. Web frameworks aim to streamline the development process, improve code maintainability, and enhance overall productivity by offering a set of best practices and reusable components. Examples of popular web frameworks include React, Angular, and Vue.js, each designed to address specific development needs and preferences. These frameworks play a pivotal role in shaping the way web applications are built, making it easier for developers to create interactive and dynamic web experiences.