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Use the switch statement to select one of many code blocks to be executed. This is how it works: The switch expression is evaluated once. The value of the expression is compared with the values of each case. If there is a match, the associated block of code is executed. If there is no match, the default code block is executed.
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.
8 sie 2021 · switch (text) { case SOME_CONSTANT || ANOTHER_CONSTANT: console.log('Case 1 entered'); break; case THIRD_CONSTANT || FINAL_CONSTANT: console.log('Case 2 entered'); break; default: console.log('Default entered'); }
21 lis 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.
19 sie 2022 · The switch statement allows to make a decision from the number of choices. If a match is found to a case label, the program executes the associated statement. If no match is found with any of the case statements, only the statements following the default are executed.
6 sie 2021 · In programming, a switch statement is a control-flow statement that tests the value of an expression against multiple cases. This is the basic syntax for a switch statement: The computer will go through the switch statement and check for strict equality === between the case and expression.
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.
