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This article mainly talks about "is javascript an object-oriented language?", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "is javascript an object-oriented language?"

The operating environment of this tutorial: windows7 system, javascript1.8.5 version, Dell G3 computer.

JavaScript (JS for short) is a lightweight, interpretive or just-in-time programming language with function priority. Although it is known as a scripting language for developing Web pages, it is also used in many non-browser environments. JavaScript is based on prototype programming, multi-paradigm dynamic scripting language, and supports object-oriented, imperative, declarative, and functional programming paradigms.

The JavaScript scripting language has the following characteristics:

Scripting language. JavaScript is an interpreted scripting language. Languages such as C and C++ are compiled and then executed, while JavaScript is explained line by line in the process of running the program.

Based on object. JavaScript is an object-based scripting language that can not only create objects, but also use existing objects.

simple. The JavaScript language uses weak variable types and does not make strict requirements on the data types used. It is a scripting language based on Java basic statements and control, and its design is simple and compact.

Dynamic. JavaScript is an event-driven scripting language that responds to user input without going through a Web server. When visiting a web page, JavaScript can directly respond to these events when the mouse clicks or moves up and down, window movement and other operations in the web page.

Cross-platform. The JavaScript scripting language does not depend on the operating system and only needs the support of browsers. So a JavaScript script can be written and used on any machine, as long as the browser on the machine supports the JavaScript scripting language, and JavaScript is already supported by most browsers. Unlike server-side scripting languages, such as PHP and ASP,JavaScript, are mainly run on users' browsers as client-side scripting languages and do not require server support. So in the early days, programmers preferred JavaScript to reduce the burden on the server, while at the same time brought another problem, security.

Why isn't JavaScript an object-oriented language?

Because object-oriented includes three major features: encapsulation, inheritance, and polymorphism. In JavaScript, there is only encapsulation, and inheritance is only simulated inheritance, not object-oriented.

So, in JavaScript, everything is an object, and properties, arrays, functions, and so on are objects.

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