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Increment and Decrement | Basic Operations
Introduction to JavaScript
course content

Course Content

Introduction to JavaScript

Introduction to JavaScript

1. Basic Concepts
2. Variables and Data Types
3. Basic Operations
4. Conditional Statements
5. Loops
6. Functions

Increment and Decrement

Increment and Decrement are operations used to increase or decrease a variable's value by 1.

Increment

The increment operation is performed using the ++ operator:

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let a = 0; a++; console.log(a); a++; console.log(a); a++; console.log(a);
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Note

The expression a++ is equivalent to a = a + 1 or a += 1.

Decrement

The decrement operation is performed using the -- operator:

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let a = 5; a--; console.log(a); a--; console.log(a); a--; console.log(a);
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Note

The expression a-- is equivalent to a = a - 1 or a -= 1.

Increment and decrement operations are frequently used in loops, which we will discuss in more detail later.

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Section 3. Chapter 4
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