Euclidean distance

JavaScript, Math, Algorithm · Dec 28, 2020

Calculates the distance between two points in any number of dimensions.

Use Object.keys() and Array.prototype.map() to map each coordinate to its difference between the two points.
Use Math.hypot() to calculate the Euclidean distance between the two points.

const euclideanDistance = (a, b) =>
  Math.hypot(...Object.keys(a).map(k => b[k] - a[k]));

euclideanDistance([1, 1], [2, 3]); // ~2.2361
euclideanDistance([1, 1, 1], [2, 3, 2]); // ~2.4495

Written by Angelos Chalaris

I'm Angelos Chalaris, a JavaScript software engineer, based in Athens, Greece. The best snippets from my coding adventures are published here to help others learn to code.

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