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snippets/js/s/euclidean-distance.md

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+---
+title: Euclidean distance
+type: snippet
+language: javascript
+tags: [math,algorithm]
+author: chalarangelo
+cover: ancient-greek-building
+dateModified: 2020-12-28T13:41:19+02:00
+---
+
+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.
+
+```js
+const euclideanDistance = (a, b) =>
+  Math.hypot(...Object.keys(a).map(k => b[k] - a[k]));
+```
+
+```js
+euclideanDistance([1, 1], [2, 3]); // ~2.2361
+euclideanDistance([1, 1, 1], [2, 3, 2]); // ~2.4495
+```