md`# Mixing in JavaScript
JavaScript, invented in the 1995, is a text-based programming language used on both the client-side and server-side. While HTML and CSS help you structure the layour and style of the website, Javascript allows you to make web pages interactive.
<img src="${await FileAttachment("html-javascript-css-very-true-about-websites-55408509.png").url()}" style="width: 500px;">
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Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
