JavaScript converts objects to primitive values by calling the valueOf method, and we rarely need to call the valueOf method ourselves. When an object with an expected primitive value is encountered, ...

JavaScript objects have a default value. In fact, they have two default values depending on the context. You can easily add default values of your choice to a custom ...

The valueOf() method of {{jsxref("String")}} values returns this string value. The valueOf() method of {{jsxref("String")}} returns the primitive value of a {{jsxref ...