The JavaScript switch statement performs type checking, ensuring both the value and the type of the expression match the case value. For example, let a = 1; switch (a) { case "1": a = "one (string type)"; break; case 1: a = "one (number type)"; break; case 2: a = "two (number type)"; break; default: a = "not found"; } console.log(`The value of ...

Use the switch statement to select one of many code blocks to be executed. This is how it works: The switch expression is evaluated once. The value of the expression is compared with the values of each case. If there is a match, the associated block of code is executed. If there is no match, the default code block is executed.

Nov 21, 2024 · The JavaScript switch statement evaluates an expression and executes a block of code based on matching cases. It provides an alternative to long if-else chains, improving readability and maintainability, especially when handling multiple conditional branches. Switch Statement Example: Here, we will print the day name on day 3.

Summary: in this tutorial, you will learn how to use the JavaScript switch statement to execute a block of code based on multiple conditions. The switch statement evaluates an expression, compares its results with case values, and executes the …

Jan 21, 2021 · Here’s an example of a working switch statement. I will explain the code below: First, you need to pass an expression to be evaluated by the switch statement into the parentheses. In the example above, the age variable is passed as an argument for evaluation.

This example shows how to use a switch...case statement to handle different cases based on the value of a variable. The switch checks the value of day and executes the matching block of code. It’s a great way to simplify multiple if...else conditions.

Aug 6, 2021 · In programming, a switch statement is a control-flow statement that tests the value of an expression against multiple cases. This is the basic syntax for a switch statement: The computer will go through the switch statement and check …

Jan 8, 2025 · In this article, we’ll explore the basics of the JavaScript switch case statement and provide step-by-step examples to help you master it. The basic syntax of the JavaScript switch case statement is as follows: case value1: // code to execute if expression equals value1. break; case value2: // code to execute if expression equals value2. break;

Nov 2, 2024 · In this article, we’ll explore the best practices and examples of using switch case statements in JavaScript. What is Switch Case? A switch case statement is a type of control flow statement that allows you to execute different blocks of code based on a …

Apr 25, 2022 · A switch statement can replace multiple if checks. It gives a more descriptive way to compare a value with multiple variants. The syntax. The switch has one or more case blocks and an optional default. It looks like this: