In-depth understanding of valueOf function and toString method

The valueOf function method in JavaScript returns the original value of the specified object. Usage:
object.valueOf()object is required and the parameter is any inherent JScript object.
The valueOf method definition of each JavaScript intrinsic object is different.

Math and Error objects do not have a valueOf method.

Basically, all JS data types have two methods, valueOf and toString, except null. The two of them solve the problem of javascript value operation and display.
JavaScript’s valueOf() method
The valueOf() method returns the original value of a Boolean object.
Using booleanObject.valueOf(), the return value is the original Boolean value of booleanObject. If the object on which this method is called is not a Boolean, a TypeError exception is thrown.

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