AnthonyPanchenko · October 27, 2017 15:51 · Dec 15, 2016
diff --git a/normalization.js b/normalization.js
@@ -0,0 +1,28 @@
+/**
+ * This gist is for Javascript beginners.
+ * @author: Anthony Du Pont <antho.dpnt@gmail.com>
+ * @site: https://www.twitter.com/JsGists
+ *
+ * It's very common in Javascript to normalize numbers. Normalization means that you are taking a number from a range
+ * and return a value from 0 to 1 corresponding to the position of this number within this range.
+ *
+ * If the number is equal to the minimum value of the range, the normal value is 0.
+ * If the number is equal to the maximum value of the range, the normal value is 1.
+ * If the number is equal to any value in the range, the normal value is any value between 0 and 1.
+ *
+ * The main idea is to convert this number to a value from 0 to 1. This is really useful for calculation in Javascript.
+ *
+ * Example:
+ * I have a range [20, 40] and I want to get the normal value of 23. 
+ **/
+
+const range = [20, 40];
+const value = 23;
+const normal = norm(value, range[0], range[1]); // Return 0.15
+
+function norm(value, min, max) {
+  return (value - min) / (max - min);
+}
+
+// Let's check the result in the console.
+console.log(normal);
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