switch (true) { case isSquare(shape): console.log("This shape is a square."); // Fall-through, since a square is a rectangle as well! case isRectangle(shape): console.log("This shape is a rectangle."); case isQuadrilateral(shape): console.log("This shape is a quadrilateral."); break; case isCircle(shape): console.log("This shape is a circle."); break; } ... This page was last modified on Jul 8, 2025 by MDN contributors.

The switch statement evaluates an expression, matching the expression's value to a case clause, and executes statements associated with that case.

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, until a break statement is encountered.

const expr = 'Papayas'; switch (expr) { case 'Oranges': console.log('Oranges are $0.59 a pound.'); break; case 'Mangoes': case 'Papayas': console.log('Mangoes and papayas are $2.79 a pound.'); // Expected output: "Mangoes and papayas are $2.79 a pound." break; default: console.log(`Sorry, we ...

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March 12, 2025 - MDN Web Docs · @MozDevNet · The switch statement is a cleaner, more readable way to handle multiple conditions in JavaScript. Use it for, ✔️ Comparing a single variable to multiple values ✔️ Handling many cases without deep nesting ...

April 11, 2021 - In this example, the expression (city variable) is matched against each case in the switch statement.

April 25, 2019 - If I lookup the documentation on MDN web docs, I will find the definition of switch statement : “The switch statement evaluates an expression, matching the expression’s value to a case clause, and executes statements associated with that case, as well as statements in cases that follow the matching case.”

/* function functionName(condition) { switch(condition) { case value1 : Statement1 case value2 : Statement2 default : Statement3 } } */ function isRose(cat) { switch(cat) { case 'rose' : return 'Hi, Rose!' case 'ted' : return 'Hi, Ted!' default : return `Hi, ${cat}!` } } content_copyCOPY https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch

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June 20, 2017 - The switch statement evaluates an expression, matching the expression's value to a case clause, and executes statements associated with that case.

MDN has an excellent resources on comparison operators. ... Sign up to request clarification or add additional context in comments. ... Thanks, i correct the operator for 80+% using Chase DeAnda method. 2018-05-21T20:39:44.973Z+00:00 ... Save this answer. ... Show activity on this post. Created a getClassName method that accepts a percent and will return a className: Copyconst getClassName = percent => { switch(true){ case (percent <= 0.01): return 'progress-bar-primary'; case (percent <= 33): return 'progress-bar-success'; case (percent <= 66): return 'progress-bar-warning'; case (percent <= 80): return 'progress-bar-danger'; default: return 'progress-bar-theme'; } } console.log('0: ', getClassName(0)); console.log('40: ', getClassName(40)); console.log('50: ', getClassName(50)); console.log('80: ', getClassName(80)); console.log('100: ', getClassName(100));

Si cette clause optionnelle n'est pas utilisée, le programme continue son exécution après l'instruction `switch`. Par convention, la clause `default` est utilisée en dernière mais cela n'est pas nécessaire. ... L'instruction {{jsxref("Instructions/break","break")}} peut optionnellement être utilisée pour chaque cas et permet de s'assurer que seules les instructions associées à ce cas seront exécutées.

January 10, 2021 - MDN URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch What information was incorrect, unhelpful, or incomplete? In the "Methods for multi-criteria case" section it starts with "Source for this techn...

var choice = 'Y'; switch(choice) { case 'Y' : console.log("Yes"); break; case 'M' : console.log("Maybe"); break; case 'N' : console.log("No"); break; default: console.log("Invalid response"); }

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JS Examples JS HTML DOM JS HTML ... Plan JS Interview Prep JS Bootcamp JS Certificate ... Based on a condition, switch selects one or more code blocks to be executed....

Terminates the current loop, switch, or label statement and transfers program control to the statement following the terminated statement.