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Introduction to TypeScript

if statementif statement

It's our turn to control the code; now we will set conditions for its execution!

Let's consider the most basic form of conditional statements - the if statement.

If statement is a fundamental programming construct that allows you to make decisions in your code. It lets you execute a block of code only if a specified condition is true. If the condition is false, the code block is skipped, and the program continues with the next instructions. In simpler terms, it's like saying, "If something is true, do this; otherwise, do something else or nothing at all."

Let's move on to the syntax:

For example:

That's almost all there is to it, but there's one more thing worth mentioning. Inside the condition block, there should be a boolean value. However, we can also place an expression that will result in a boolean value inside this block, for example:

You can change the value of the variable age to see how the code works depending on that value.

I'll tell you how to set a condition if the first one doesn't work in the next chapter!

What will be the result of executing this code?

Select the correct answer

Everything was clear?

Section 2. Chapter 2
course content

Course Content

Introduction to TypeScript

1. TypeScript Fundamentals

What is TypeScript?SyntaxSimple variable declarationMathematics in TypeScriptTyped variable declarationCommentsCode Syntax Correction Challenge

2. Conditional Statements

Comparison Operatorsif statementIf-else statementDay of the Week Condition Execution ChallengeComplex ConditionsSwitchChallenge: Commission Calculator

3. Arrays

Declaration and Advantages of ArraysWorking with Array ElementsArray TypingChallenge: Modifying ArraysSpread Syntax

4. Loops

While-Loop`break` keywordDo-While LoopChallenge (snail game)`for` loop`for` loop with arrays Challenge (FizzBuzz)`forEach` method

5. Functions

Functions introductionParameters and Return StatementChallenge (lottery)Optional ParametersDefault ValuesChallenge (price calculator) Summary

Introduction to TypeScript

if statementif statement

It's our turn to control the code; now we will set conditions for its execution!

Let's consider the most basic form of conditional statements - the if statement.

If statement is a fundamental programming construct that allows you to make decisions in your code. It lets you execute a block of code only if a specified condition is true. If the condition is false, the code block is skipped, and the program continues with the next instructions. In simpler terms, it's like saying, "If something is true, do this; otherwise, do something else or nothing at all."

Let's move on to the syntax:

For example:

That's almost all there is to it, but there's one more thing worth mentioning. Inside the condition block, there should be a boolean value. However, we can also place an expression that will result in a boolean value inside this block, for example:

You can change the value of the variable age to see how the code works depending on that value.

I'll tell you how to set a condition if the first one doesn't work in the next chapter!

What will be the result of executing this code?

Select the correct answer

Everything was clear?

Section 2. Chapter 2
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