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The JavaScript Switch Statement. Use the switch statement to select one of many code blocks to be executed. Syntax. switch (expression) { case x: // code block. break; case y: // code block. break; default: // code block. } This is how it works: The switch expression is evaluated once.
The switch statement executes a block of code depending on different cases. The switch statement is a part of JavaScript's "Conditional" Statements, which are used to perform different actions based on different conditions. Use switch to select one of many blocks of code to be executed.
8 sie 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: switch (varName) { case "afshin": case "saeed": case "larry": alert('Hey'); break; default: alert('Default case'); }
Poprawny kod powinien wyglądać w taki sposób: let number = 1; switch (number) { case 1: console.log('1'); break; case 2: console.log('2'); break; case 3: console.log('3'); break; default: console.log('default'); }
22 sie 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.
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 switch statement with the help of examples.
6 sie 2021 · switch (2) { case "2": console.log("Number 2 in a string"); break; case "3": console.log("Number 3 in a string"); break; default: console.log("Number not present"); break; } break statements will break out of the switch when the case is matched.
