Basic JavaScript syntax tutorial _ javascript tips-js tutorial

Javascript is a widely used scripting language on Web pages. This article introduces the basic syntax of javascript. For more information, see the basic concepts of Javascript in this article.

I.Javascript is a widely used scripting language in Web pages.

Ii. Features of Javascript:

1. Developed by Netscape, It is a script language that is driven by objects and events and has certain security.
2.Features:

A) Javascript is a scripting language and an explanatory language;
B) Javascript runs based on the javascript interpreter in the browser and has nothing to do with the operating environment;
C) javascript uses less rigorous data types. The advantage of this is that it is more convenient to define or use data, but it also brings about obfuscation problems;
D) Javascript is an object-based language. In this way, you can create your own objects and use the attributes and methods of the created objects to create many functions;
E) the main function of Javascript is to make the webpage dynamic, and there is also such interaction;
F) Javascript is secure. Users are not allowed to access the local hard disk, and files on the network are not allowed to be modified or deleted. This effectively prevents data loss and malicious modification.
G) Example: HTML file built-in script