Datatypes in Javascript – setting the record straight

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It’s a question that often comes up and there are many places on the internet that give an inaccurate answer, so here’s the real-deal.

Javascript has three primitive datatypes:

• number
• string
• boolean

There are another two special datatypes:

• null
• undefined

The others are variations of object:

• object
• function
• array

See here for further reading.