Explore the surprising influence of Pascal on JavaScript and TypeScript in this 50-minute video. Delve into the historical connections between these programming languages, examining features like top-down programming, var declarations, statement separation, and type annotations. Learn how early JavaScript, running on Netscape Navigator 3, incorporated Pascal-inspired elements. Compare and contrast Pascal, JavaScript, and TypeScript through hands-on coding examples, covering topics such as case sensitivity, function declarations, and type systems. Gain insights into language design decisions, compiler behavior, and the evolution of JavaScript features like hoisting. Discover the often-overlooked Pascal heritage in modern web development technologies.
How JavaScript and TypeScript Is Heavily Influenced by Pascal
Overview
Syllabus
- Introduction
- Brendan Eich and JavaScript's influences
- Working with Netscape Navigator 3
- Creating some JavaScript for Navigator 3
- WriteLn, Write and the DOM
- Top Down Programming JavaScript, Pascal, C, Java
- WriteLn and Write in Pascal
- Statement Separation in Pascal and JavaScript
- Java and C is Statement Terminated
- Java and Statement Termination
- Pascal is Case Insensitive
- JavaScript is Case Sensitive but it's complicated
- JavaScript vs Pascal Functions
- Strong Typing vs Dynamic Typing
- Turning Pascal Functions into JavaScript Functions
- Turning Pascal Functions into TypeScript Functions
- Type Annotations are Pascal
- Type Inference in TypeScript is from Standard ML
- Variables and Var
- Hoisting
- How JavaScript compilers work
- Pascal is a one pass compile
- Early JavaScript hoisting
- With Statements, Type Aliases, Sets are Pascal
- Conclusion
Taught by
Chris Hay
