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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 JavaScript switch...case statement executes different blocks of code based on the value of a given expression. Here's a simple example of the switch...case statement. You can read the rest of the tutorial for more. Example. let trafficLight = "green"; let message = "" switch (trafficLight) { case "red": message = "Stop immediately.";
14 lut 2024 · In JavaScript, a switch statement is a control flow statement that evaluates an expression and executes code based on matching cases. It provides a more concise and readable way to handle multiple possible conditions compared to nested if...else statements. Syntax: switch (expression) { case value1:
Introduction to the JavaScript switch case statement. 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;
14 lut 2022 · The JavaScript switch statement (or switch case statement) evaluates a given expression. It then matches the result of that expression with the values in the case clause. If it finds a match, then it executes the statements associated with that matching case clause.
The SQL CASE Expression. The CASE expression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in the ELSE clause.
25 lip 2024 · 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.
