Object API: Object.is()
Object.is() compares if two values are the same.
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Object.is() determines whether two values are the same
scalar values
- 1 is the same as 1
- int 1 is different to string "1"
- strings just have to match
- +0 is not the same as -0
- NaN is the same as NaN
coercion (as in ==) and strict compare (as in ===) do NOT apply
- +0 and -0 are not the same for
Object.is()
- empty string and
false are not the same
- NaN
- NaN and 0/0
complex values
{} is just not the same as {}- for the same object
is() reports true
- two
Maps with the same content are not the same thing