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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.
Exercise: The switch statement is missing a default case. Add it at the bottom of the switch statement, and set text to "I have never heard of that fruit." Hint: Do not forget the colon after the default keyword.
The JavaScript switch statement performs type checking, ensuring both the value and the type of the expression match the case value. For example, let a = 1; switch (a) { case "1": a = "one (string type)"; break; case 1: a = "one (number type)"; break; case 2: a = "two (number type)"; break; default: a = "not found"; } console.log(`The value of ...
9 kwi 2021 · The JavaScript switch keyword is used to create multiple conditional statements, allowing you to execute different code blocks based on different conditions. The code below shows you a switch statement in action: var score = 20; switch(age){ case 10: console.log("Score value is 10"); break; case 20:
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.
JS Switch - Exercise 1. Generate a switch statement, which will alert “Hi” in case vegetables is “Carrot”, and “Welcome” if vegetables is “Broccoli”.
