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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.
Use switch to select one of many blocks of code to be executed. This is the perfect solution for long, nested if/else statements. The switch statement evaluates an expression. The value of the expression is then compared with the values of each case in the structure.
Here is the code: function fruitColor(fruit) { switch(color) { case "apple" : green; break; case "banana" : yellow; break; case "kiwi" : green; break; case "plum" : red; break; } } var result = fruitColor(plum);
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...case statement executes different blocks of code based on the value of a given expression.
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.
25 kwi 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:
