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This article shows you what javascript is and what its characteristics are. The content is concise and easy to understand. It will definitely make your eyes shine. I hope you can gain something from the detailed introduction of this article.

JavaScript is a lightweight, interpreted or just-in-time programming language with function preference, which has been widely used in Web application development and is often used to add some dynamic effects and interactive functions to web pages; its characteristics are: 1. interpreted scripting language;2. object-based;3. weakly typed;4. dynamic;5. cross-platform.

Operating environment of this tutorial: Windows 7 system, Javascript version 1.8.5, Dell G3 computer.

What is JavaScript?

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

JavaScript is currently the most popular and widely used client-side scripting language, used to add some dynamic effects and interactive features to web pages, and plays an important role in the field of Web development.

JavaScript, along with HTML and CSS, make up the web pages we see, where:

HTML is used to define the content of web pages, such as titles, text, images, etc.;

CSS is used to control the appearance of web pages, such as colors, fonts, backgrounds, etc.

JavaScript is used to update the content of the web page in real time, such as getting data from the server and updating it to the web page, modifying the style of certain tags or the content of them, etc., to make the web page more vivid.

Features of JavaScript

1)interpreted scripting language

JavaScript is an interpreted scripting language, different from C, C++ and other languages that need to be compiled before running. Code written in JavaScript does not need to be compiled and can be run directly.

2)object-based

JavaScript is an object-based scripting language that not only creates objects, but also uses existing objects.

3)weakly typed

JavaScript is a weakly typed programming language with no strict requirements for the type of data used, for example, you can initialize a variable to any type and change the type of the variable at any time.

4)dynamic

JavaScript is an event-driven scripting language that responds to user input without the help of a Web server, such as when we visit a web page, click on a web page or scroll through a window, and JavaScript can respond directly to these events.

5)cross-platform

JavaScript is independent of the operating system and runs in the browser. So a JavaScript script can be written and run on any system, as long as the browser on the system supports JavaScript.

As servers grow stronger, JavaScript continues to thrive on its cross-platform, easy-to-use advantages, although programmers prefer server-side scripts for security. At the same time, some special features (such as AJAX) must rely on JavaScript for client-side support.

What is javascript and what are its characteristics? Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserves, please pay attention to the industry information channel.

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