What are the differences between various JavaScript wrappers?

What are the differences between various JavaScript wrappers?

JavaScript has several wrapper objects like String, Number, and Boolean. They allow primitive values to be treated as objects.

Can you explain how the String wrapper works?

The String wrapper allows you to create string objects. For example, new String('hello') creates a String object, which has methods like toUpperCase().

What about the Number wrapper?

The Number wrapper converts a numeric value into an object. For instance, new Number(123) creates a Number object, which can be useful for methods.

Are there any performance implications of using these wrappers?

Yes, using wrapper objects can be less efficient than using primitive values due to the overhead of object creation and garbage collection.