Best and Worst of Early JavaScript | Brendan Eich and Lex Fridman

TL;DR

In 10 days, the creator of JavaScript regretted adding a sloppy comparison operator, but was proud of incorporating first-class functions.

Transcript

so let's let's talk about two things one it sounds like the comparison operator the equality operator is the thing that you regret so maybe making it sloppy making it sloppy so what is the biggest thing you regret in those 10 days and what is the biggest thing you're proud of so that that making it sloppy came after the 10 days and my lesson there ... Read More

Key Insights

• 🥺 Adding unnecessary features can lead to regret and unnecessary complexity in programming language design.
• 🍃 Leaving out important features like garbage collection can result in memory allocation issues.
• 🥳 The lack of memory safety measures in the early days of JavaScript development led to security vulnerabilities.

Questions & Answers

Q: What is the biggest regret of the creator during the 10 days of creating JavaScript?

The creator regrets making the comparison operator sloppy and accepting requests to add unnecessary features, realizing that design should involve leaving things out.

Q: Why was garbage collection left out initially and what were the consequences?

Garbage collection was left out initially due to time constraints, resulting in memory allocation issues. Without garbage collection, long-lived jobs quickly ran out of memory.

Q: How did the lack of garbage collection impact security?

Without proper memory management, security vulnerabilities arose, potentially allowing remote code execution. Memory safety measures like non-executable heap memory and stack defenses were not yet implemented.

Q: What aspect of JavaScript development was the creator most proud of?

The creator is most proud of incorporating first-class functions into JavaScript, especially considering that other languages like Java did not have this feature at the time.

Summary & Key Takeaways

• The creator regrets adding a sloppy comparison operator and accepting requests to make the language sloppy during the development process.

• Garbage collection was initially left out, causing memory allocation issues, but reference counting was eventually implemented to address the problem.

• Security vulnerabilities arose due to the lack of memory safety measures, leading to the need for constant bug fixes and updates.