What is the concept of Data Types in JavaScript?

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.

Prabhas

Published on 16-Feb-2018 11:06:16

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