How could === defend you in this case? `"100+" != 100` already. If you do a typeof before further processing the value then you'll know how to treat it, and ad

How could === defend you in this case? `"100+" != 100` already. If you do a typeof before further processing the value then you'll know how to treat it, and additionally someone who comes after you will realize that the value could be a number or a string.