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This article introduces the relevant knowledge of "what are the characteristics of JavaScript". In the operation of actual cases, many people will encounter such a dilemma. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

JavaScript has the characteristics: 1, interpretive scripting language, the code does not need to be compiled; 2, object-based, using JavaScript can not only create objects, but also operate to use existing objects; 3, weak types; 4, dynamic; 5, cross-platform.

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

JavaScript (abbreviated as "JS") is the most popular and widely used client script language, which is used to add some dynamic effects and interactive functions to web pages, and plays an important role in the field of Web development.

JavaScript, together with HTML and CSS, make up the web page we see, where:

HTML is used to define the content of a web page, such as title, body, image, 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 or content of some tags, etc., can make the web page more vivid.

JavaScript 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.

JavaScript has the following characteristics:

1) interpretive scripting language

JavaScript is an interpretive scripting language. Unlike C, C++ and other languages that need to be compiled and then run, code written with JavaScript does not need to be compiled and can be run directly.

2) object-based

JavaScript is an object-based scripting language. Using JavaScript, you can not only create objects, but also manipulate existing objects.

3) weak type

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

4) dynamic

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

5) Cross-platform

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

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