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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 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: switch (expression) {. case value1: statement1; break; case value2: statement2; break;
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.
25 kwi 2022 · The syntax. The switch has one or more case blocks and an optional default. It looks like this: switch(x) { case 'value1': // if (x === 'value1') ... [break] case 'value2': // if (x === 'value2') ... [break] default: ... [break] }
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.
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.
In this tutorial you will learn how to use the switch...case statement to test or evaluate an expression with different values in JavaScript. Using the Switch...Case Statement. The switch..case statement is an alternative to the if...else if...else statement, which does almost the same thing.
