JavaScript is a literal scripting language, a dynamically typed, weakly typed, prototype-based language with built-in support for types. Its interpreter is called the JavaScript engine, which is part of the browser and is widely used in client-side scripting languages. It was first used on HTML (an application under Standard Universal Markup Language) web pages to add dynamic functions to HTML web pages. .
In 1995, it was first designed and implemented on the Netscape Navigator browser by Brendan Eich of Netscape. Because Netscape was working with Sun, Netscape management wanted it to look like Java, hence the name JavaScript. But in fact its grammatical style is closer to Self and Scheme. [1]

In order to gain technical advantages, Microsoft launched JScript, and CEnvi launched ScriptEase, which can also run on the browser like JavaScript. In order to unify specifications, JavaScript is also called ECMAScript because it is compatible with the ECMA standard.

Course Introduction: "JavaScript Advanced Framework Design Video Tutorial" is a very personalized language. Whether it is from the organization of the code or the structure of the code Both the programming paradigm and the object-oriented theory are unique. The question of whether Javascript is an object-oriented language has been debated for a long time. There is obviously an answer. However, even though Javascript has been dominant for twenty years, there is still no understanding of the object-oriented theory. Be understood by everyone. Dynamic grammatical features, obscure prototype structures, messy scope rules, intricate closure applications, and unclear this... and many other issues are the focus and difficulties of Javascript. .

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