▲ Check if a Date is Valid in JavaScript - Mastering JS at masteringjs.io▼1 up and 0 down, posted by vkarpov15 1181 days ago 1 comment
MaxArt 1180 days ago. link 1 point ▲ ▼Small correction: // 3 * obj.nonexistentProperty === undefined It's actually === NaN.
Small correction: // 3 * obj.nonexistentProperty === undefined It's actually === NaN.