diff --git a/scripts/dot_product.js b/scripts/dot_product.js
new file mode 100644
index 0000000..d4b0939
--- /dev/null
+++ b/scripts/dot_product.js
@@ -0,0 +1,12 @@
+var f = function (a1, a2) {
+	var i=0;
+	var result = 0;
+	if (a1.length !== a2.length) {
+		console.log("Input error - Vectors must be of the same length");
+		return;
+	} 
+	for (i; i<a1.length; i++) {
+		result += a1[i] * a2[i];
+	}
+	return result;
+}