score:2
Accepted answer
the date
object does not override the ===
operator, meaning that what is going to be compared is whether or not they have the same reference.
as a simple example, take the following code :
console.log(new date() === new date())
this is always going to return false no matter what because both created objects have a different reference.
however, you can use the string generated by formatting them as a key :
console.log((new date()).gettime() === (new date()).gettime())
Source: stackoverflow.com
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