📝 Added sandbox (code sketchbook)

sandbox/obj_arr_methods/objArr.js

@@ -0,0 +1,6 @@
+const arr = [0, 1, 2 ,3]
+const arr2 = [1, 2, 3 ,4]
+
+Object.keys(arr).forEach(key => console.log(`key >>: ${key}`))
+Object.keys(arr2).forEach(key => console.log(`arr2[key] >>: ${arr2[key]}`))
+Object.values(arr2).forEach(val => console.log(`val >>: ${val}`))