The Modern JavaScript Bootcamp (2019) - The Problem: Cross-Browser Compatibility

The video introduces the challenge of cross-browser compatibility in JavaScript applications, focusing on older browsers that do not support modern features. It uses examples of 'const' and 'class' syntax to illustrate compatibility issues, particularly with Internet Explorer. The video emphasizes the need for tooling to address these issues, allowing developers to use modern JavaScript features across all browsers. The upcoming sections will delve into specific tools to solve these problems.

What are the two key problems that the tooling aims to solve in JavaScript development?

How do older browsers affect the use of modern JavaScript features?