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Conditional, Comma, typeof, and instanceof Operators

Explore how to use the conditional, comma, typeof, and instanceof operators in JavaScript. Understand their roles in evaluating expressions, determining primitive and reference value types, and identifying object instances. This lesson helps you write clearer and more effective code by mastering these fundamental operators.

Comma operator #

JavaScript uses the comma operator to allow the execution of more than one operation in a single statement, as in this example:

Javascript (babel-node)
var val1 = 1, val2 = 2, val23 = 23;

You can use this operator in expressions, too. In this way, the comma operator returns the value ...