What are wrapper objects for primitive values?

This blog post is first in a series of two: What are wrapper objects for primitive values? How do primitive values get their properties? Each of the primitive types boolean, number, bigint, string and symbol has an associated wrapper class (Boolean, Number, BigInt, String, Symbol). In this blog post, we examine what these classes are good for. Wrapper classes for primitive types # This is an exha

[jay-es]

'abc' と new String('abc') の違い