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.

Mar 13, 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, until a break statement is encountered.

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.

The JavaScript switch...case statement executes different blocks of code based on the value of a given expression.

The switch statement evaluates an expression, compares its results with case values, and executes the statement associated with the matching case value. The following illustrates the syntax of the switch statement: case value1: statement1; break; case value2: statement2; break; case value3: statement3; break; default: statement; How it works.

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:

Aug 8, 2021 · Use the fall-through feature of the switch statement. A matched case will run until a break (or the end of the switch statement) is found, so you could write it like: case "afshin": case "saeed": case "larry": . alert('Hey'); break; default: . alert('Default case'); See: developer.mozilla.org/en-US/docs/JavaScript/Reference/… @nafg: Try switch(1).

Apr 10, 2025 · In JavaScript, decision-making is a critical part of handling logic.Two commonly used structures for implementing conditional logic are the if-else statement and the switch case. While both serve similar purposes, their use cases, readability, and performance implications differ significantly.

JavaScript switch case Syntax. The syntax of it is as follows: Switch(expression) { Case Option 1: //Execute these when the expression result match Option 1 break; Case Option 2: //Execute these when the expression result match Option 2 break; Case Option 3: //Execute these when the expression result match Option 3 break; .....

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;