Examples of using Observable in a variety of environments - observablehq/examples. But we've made some small changes to the language to enable reactive dataflow. All 18 JavaScript 9 TypeScript 3 Jupyter Notebook 2 CSS 1 HTML 1 Python 1 Vue 1. It needs a special library runtime to run on your browser. Observablehq provides a nice inline code editor, but that's incidental to what observable is. Using vanilla Javascript and Javascript modules this works well: