Not a javascript built-in object

In front-end development, JavaScript is a very important programming language. It not only has good functional features, but can also perform a variety of operations. JavaScript contains many built-in objects, such as Array, String, Number, etc., which allow us to program more conveniently. However, some developers may run into an issue where something that looks like a built-in JavaScript object is not. So, let’s explore the specific “not JavaScript built-in objects” below.

1. jQuery

In front-end development, jQuery is a very popular JavaScript library that can easily perform DOM operations, event processing, Ajax operations, etc. Although it looks like a built-in object of JavaScript, it is not. jQuery just encapsulates a layer based on JavaScript, providing a more easy-to-use API, allowing developers to program more conveniently.

2. underscore.js

underscore.js is also a very popular JavaScript library, which can easily perform functional programming, collection operations, etc. It also looks like a built-in JavaScript object, but it's not. Underscore.js also encapsulates a layer based on JavaScript, providing a more easy-to-use API, allowing developers to program more conveniently.

3. moment.js

moment.js is a JavaScript library specially used to process dates and times, and can perform operations such as formatting and display. It also looks like a built-in JavaScript object, but it's not. moment.js also encapsulates a layer based on JavaScript, providing a more easy-to-use API, allowing developers to program more conveniently.

4. D3.js

D3.js is a very popular data visualization JavaScript library that can easily visualize data. It also looks like a built-in JavaScript object, but it's not. D3.js also encapsulates a layer on the basis of JavaScript, providing a more easy-to-use API, allowing developers to program more conveniently.

5. React

React is a very popular JavaScript library developed by Facebook, which can easily build reusable user interfaces. Although it looks like a built-in object of JavaScript, it is not. React also encapsulates a layer based on JavaScript, providing a more easy-to-use API, allowing developers to program more conveniently.

In general, JavaScript is a very powerful programming language. It has many built-in objects that can be easily programmed. In addition to built-in objects, there are many third-party libraries and frameworks that can help developers develop more efficiently. Although these libraries and frameworks look like built-in objects of JavaScript, they are not. We need to understand the specific use of these libraries and frameworks in order to better grasp their functions and better complete front-end development tasks.

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