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Conditionals in JavaScript

Explore JavaScript conditionals to understand how to control program flow using if, else if, and else statements. Learn how to write chained conditions that execute exclusively, and grasp the importance of curly brackets for managing multiple code lines within conditionals.

Conditionals features

A program conditional has the following:

  • A condition which can be true or false
  • A program block executed when the condition is true
  • A program block executed when the condition is false

With these features in mind, let’s map them to the corresponding JavaScript syntax.

Keywords and semantics

In JavaScript, a conditional statement consists of various properties and keywords.

if condition

The if-condition is the starting point of a conditional. The syntax is as ...