Background:
JavaScript data types
There are six different data types in JavaScript:
- string
- number
- boolean
- object
- function
- symbol
There are three object types:
- Object
- Date
- Array
Two data types that do not contain any values:
- null
- undefined
The typeof operator
You can use the Typeof operator to see the data types of JavaScript variables.
<! DOCTYPEhtml>
<html>
<head>
<meta charset="utf-8">
<title>Sun Called beast's blog</title>
</head>
<body>
<p>The Typeof operator returns the types of variables, objects, functions, and expressions.</p>
<p id="demo"></p>
<script>
document.getElementById("demo").innerHTML =
typeof "john" + "<br>" +
typeof 3.14 + "<br>" +
typeof NaN + "<br>" +
typeof false &
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