String()
console.log(
String(3),
String(true),
String(null),
String(undefined)
)
Number()
console.log(Number("1234"), Number(true), Number(false), Number("1234asdf456"));
Boolean()
true
console.log(Boolean(1), Boolean(123), Boolean("Javascript"));
false
console.log(Boolean(0), Boolean(""), Boolean(null), Boolean(undefined), Boolean(NaN));
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