Javascript datatypes

Datatypes are used to hold different types of values. JavaScript supports the following three primitive datatypes - Number, String, Boolean.

Javascript datatypes

Datatypes are used to hold different types of values. JavaScript supports the following three primitive datatypes.

  • Numbers – It can be a whole number of a fractional number.
  • String – A string is used to hold a series of characters.
  • Boolean –  Boolean datatype can hold only two values – TRUE or FALSE.

Things to remember

  • Strings are written inside double or single quotes.
  • Integers are written without a single or double quote.
  • JavaScript treats all numbers as 64-bit floating-point values.

Following is a list of JavaScript datatypes.

DatatypeType
StringPrimitive
NumberPrimitive
BooleanPrimitive
ObjectComposite

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