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javascript/snippets/clamp-number.md

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+---
+title: Clamp number
+type: snippet
+tags: [math]
+cover: clay-pot-horizon
+dateModified: 2020-10-22T20:23:47+03:00
+---
+
+Clamps `num` within the inclusive range specified by the boundary values `a` and `b`.
+
+- If `num` falls within the range, return `num`.
+- Otherwise, return the nearest number in the range.
+
+```js
+const clampNumber = (num, a, b) =>
+  Math.max(Math.min(num, Math.max(a, b)), Math.min(a, b));
+```
+
+```js
+clampNumber(2, 3, 5); // 3
+clampNumber(1, -1, -5); // -1
+```