% Getting Started with JS In path/to/my-js-stuff, create index.html: ~~~html
hi~~~ style.css: ~~~css /* styles in here */ ~~~ main.js: ~~~js let a = [22, 23, 24]; console.log(a.length); console.log(a["length"]); // Yup, same as above. ~~~ Then: #. open your browser to `file:///path/to/my-js-stuff/index.html`, #. toggle on "Tools --> Web Developer --> Toggle Tools", and #. go to the Console tab. Reload the page to refresh the console and re-run your code in main.js.