What is the concept of Data Types in JavaScript?

JavascriptWeb DevelopmentFront End Technology

JavaScript allows you to work with three primitive data types −

  • Numbers, eg. 123, 120.50 etc
  • Strings of text e.g. "This text string" etc.
  • Boolean e.g. true or false.

JavaScript also defines two trivial data types, null and undefined, each of which defines only a single value. In addition to these primitive data types, JavaScript supports a composite data type known as object. We will cover objects in detail in a separate chapter.

JavaScript does not make a distinction between integer values and floating-point values. All numbers in JavaScript are represented as floating-point values. JavaScript represents numbers using the 64-bit floating-point format defined by the IEEE 754 standard.

Published on 16-Feb-2018 15:36:16