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    1. Write the keyword switch, followed by an expression in parentheses (expression).

    2. Open a block using curly braces {} to define the cases.

    3. Use the keyword case followed by a value to match the expression, ending with a colon :.

    4. Add the code block to execute if the case matches.

    5. Use the break statement to exit the switch block after executing the matched case.

    6. Repeat steps 3–5 for additional cases.

    7. Optionally, include a default case to handle unmatched values. End it with a colon : and its code block.

    Example Syntax:

    switch (expression) {
    case value1:
    // Code block for value1
    break;
    case value2:
    // Code block for value2
    break;
    default:
    // Code block if no case matches
    }
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    Key Notes:

    • The break statement prevents "fall-through" to subsequent cases.

    • The default case is optional and acts as a fallback.

    • switch uses strict comparison (===), so types must match.

    Learn more:
    1 -w3schools.com2 -developer.mozilla.org3 -javascript.info
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    The "switch" statement - The Modern JavaScript Tutorial
    The Modern JavaScript Tutorial
    switch - JavaScript | MDN

    The switch statement evaluates an expression, matching the expression's value agai…

    Mozilla Developer
    What is an example of a switch in JavaScript?

    An example of switch (the executed code is highlighted): Here the switch starts to compare a from the first case variant that is 3. The match fails. Then 4. That’s a match, so the execution starts from case 4 until the nearest break. If there is no break then the execution continues with the next case without any checks. An example without break:

    javascript.info
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  2. W3School
    https://www.w3schools.com › js › js_switch.asp

    JavaScript Switch Statement - W3Schools

    When JavaScript reaches a breakkeyword, it breaks out of the switch block. This will stop the execution inside the switch block. It is not necessary to break the last case in …
    The Default Keyword

    The defaultkeyword specifies the code to run if there is no case match: The defaultcase does not have to be the last case in a switch block:

    Common Code Blocks

    Sometimes you will want different switch cases to use the same code. In this example case 4 and 5 share the same code block, and 0 and 6 share another code block:

    Switching Details

    If multiple cases matches a case value, the firstcase is selected. If no matching cases are found, the program continues to the defaultlabel. If no default label is found, the program continues to the statement(s) after the switch.

    Strict Comparison

    Switch cases use strictcomparison (===). The values must be of the same type to match. A strict comparison can only be true if the operands are of the same type. In this example there will be no match for x:

  3. Mozilla Developer
    https://developer.mozilla.org › ... › Statements › switch

    switch - JavaScript | MDN

    Jul 8, 2025 · The switch statement evaluates an expression, matching the expression's value against a series of case clauses, and executes statements after the first case clause with a matching value, …

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  4. GeeksForGeeks
    https://www.geeksforgeeks.org › javascript › switch...

    JavaScript switch Statement - GeeksforGeeks

    Jul 28, 2025 · The switch statement evaluates an expression and executes code based on matching cases. It’s an efficient alternative to multiple if-else …

  5. The Modern JavaScript Tutorial
    https://javascript.info › switch

    The "switch" statement - The Modern JavaScript Tutorial

    Apr 25, 2022 · You're using switch cases with conditions, which isn't the correct way to use a switch statement. The switch statement is meant to compare a single …

  6. DEV Community
    https://dev.to › master-the-javascript-switch-statement-a...

    Master the JavaScript Switch Statement: A Complete

    Sep 17, 2025 · The JavaScript switch statement is a powerful and often underutilized tool. It provides a structured, readable, and often more efficient way …

  7. A-Z Tech
    https://www.jquery-az.com › javascript-switch-case...

    JavaScript Switch Case: Explained with Different HTML …

    Jan 9, 2016 · Following are a few examples to explain how you can use the switch statement simply and with different HTML elements. A simple example with …

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  9. W3docs
    https://www.w3docs.com › ... › javascript-switch.html

    Mastering the JavaScript switch Statement: A …

    In JavaScript, the switch statement is a powerful tool for executing different actions based on various conditions, providing a cleaner alternative to multiple if …

  10. JavaScript Tutorial
    https://www.javascripttutorial.net › javascript-switch-case

    JavaScript switch case Statement

    This tutorial shows you how to use the JavaScript switch case statement to evaluate a block based on multiple conditions.

  11. Programiz
    https://www.programiz.com › javascript › switch-statement

    JavaScript switch...case Statement (with Examples)

    The JavaScript switch statement executes different blocks of code based on the value of a given expression. In this tutorial, you will learn about the JavaScript …

  12. LogRocket Blog
    https://blog.logrocket.com › switch-statements-javascript

    A practical guide to switch statements in JavaScript

    Feb 26, 2025 · Learn the basics of the switch case syntax, typical use cases like mapping values, and the often-confusing fallthrough behavior.

  13. Deep dive into JavaScript HTML Switch

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