Randomizing SVG Shapes

SVG shapes are all built from numbers. Obvious, perhaps, but also, I’m not sure we take as much advantage of that as we could with inline <svg>. For example, it’s pretty easy to generate a new pseudo-random number in JavaScript:

function getRandomInt(min, max) {   return Math.floor(Math.random() * (max - min + 1) + min); }

Now imagine a bunch of variables set to random numbers, and using ES6 template literals to stitch them together:

let newPoints = `$  {x1},$  {y1} {x2},$  {y2} {x3},$  {y3} {x3},$  {y3}`; 

Which makes a valid syntax for the points attribute of a <polygon>.

let polygon = document.querySelector("polygon");
polygon.setAttribute("points", newPoints);

A more detailed example of that, and a demo, over on the Media Temple blog.

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Randomizing SVG Shapes is a post from CSS-Tricks

CSS-Tricks

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