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30-seconds-of-code/snippets/vectorDistance.md
30secondsofcode ffc7d2aeb8 Travis build: 1019
2019-02-25 06:42:36 +00:00

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### vectorDistance
Returns the distance between two vectors.
Use `Array.prototype.reduce()`, `Math.pow()` and `Math.sqrt()` to calculate the Euclidean distance between two vectors.
```js
const vectorDistance = (...coords) => {
let pointLength = Math.trunc(coords.length / 2);
let sum = coords
.slice(0, pointLength)
.reduce((acc, val, i) => acc + Math.pow(val - coords[pointLength + i], 2), 0);
return Math.sqrt(sum);
};
```
```js
vectorDistance(10, 0, 5, 20, 0, 10); // 11.180339887498949
```