SVG fundamentals
This example demonstrates how to construct and render an SVG scene using only native browser APIs, without D3.js. It shows 100 alternating black and white vertical rectangles that fill the entire window width and height. The code creates an SVG element dynamically via `document.createElementNS` and sets its dimensions to match `window.innerWidth` and `window.innerHeight`. Each rectangle is then appended to the SVG with a width of 10 pixels, producing a striped pattern. The rendering approach relies entirely on manual SVG attribute manipulation rather than data-binding or visualization libraries.