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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.
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.
The break statement breaks out of a switch or a loop. In a switch, it breaks out of the switch block. This stops the execution of more code inside the switch. In in a loop, it breaks out of the loop and continues executing the code after the loop (if any).
8 gru 2022 · Możemy to zrobić, dodając dodatkowe bloki case do naszego kodu: switch (x) { case true: console.log("Kciuk dla JavaScript"); break; case false: console.log("X ma wartość false"); break; default: console.log("X ma inną wartość"); break; }
11 sie 2023 · The break statement terminates the current loop or switch statement and transfers program control to the statement following the terminated statement. It can also be used to jump past a labeled statement when used within that labeled statement.
Jeżeli zabraknie słowa kluczowego break, to program nie "wyskoczy" z danej instrukcji case i będzie się wykonywał tak długo, aż trafi na innego break'a lub jeśli nie będzie go wcale, to wykona wszystkie kolejne przypadki. Możesz zobaczyć to na przykładzie: switch (number) {. case 1:
18 gru 2023 · JavaScript break statement is used to terminate the execution of the loop or the switch statement when the condition is true. In a switch, code breaks out and the execution of code is stopped. In a loop, it breaks out to the loop but the code after the loop is executed. Syntax: break; Using Labels
