Create 2634-filter-elements-from-array.js (#3731)

Author: dmgodoy

javascript/2634-filter-elements-from-array.js

@@ -0,0 +1,12 @@
+/**
+ * @param {number[]} arr
+ * @param {Function} fn
+ * @return {number[]}
+ */
+var filter = function (arr, fn) {
+    ans = [];
+    for (let i = 0; i < arr.length; i++)
+        if (fn(arr[i], i))
+            ans.push(arr[i]);
+    return ans;
+};