Conditional Expressions and Optional Chaining
Learn what conditional expressions are and how we can use nested properties through optional chaining.
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Conditional expressions
Conditional expressions, also known as ternary expressions, are a feature of JavaScript that allows us to write concise statements that execute different actions depending on a boolean condition. They have the following syntax:
(conditional) ? ( true statement ) : ( false statement );
We can use this JavaScript feature in TypeScript language, which uses a question mark ( ? ) symbol to define the if statement and a colon ( : ) to
define the then and else paths.
As an example of this syntax, consider the following code:
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