What are some effective JavaScript minification techniques?

What are some effective JavaScript minification techniques?

JavaScript minification techniques include removing whitespace, comments, and shortening variable names. Tools like UglifyJS and Terser can automate this.

Can you explain how UglifyJS works?

UglifyJS parses your JavaScript code, creates an abstract syntax tree (AST), and then optimizes it by removing unnecessary characters and renaming variables.

Are there any downsides to minifying JavaScript?

Yes, minification can make debugging difficult since the code becomes less readable. It's also important to ensure that minification doesn't break functionality.

How can I test my minified code?

You can test minified code by using source maps, which map the minified code back to the original code, allowing for easier debugging.