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Jul 25, 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 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.
Jul 25, 2024 · A switch statement allows a program to evaluate an expression and attempt to match the expression's value to a case label. If a match is found, the program executes the associated statement. A switch statement looks like this:
Apr 14, 2015 · The switch statement evaluates an expression, matching the expression's value to a case clause, and executes statements associated with that case. Syntax. switch (expression) { case value1: //Statements executed when the result of expression matches value1. [break;] case value2: //Statements executed the result of expression matches value2.
Aug 22, 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. Table of Content. Switch Statement Syntax. How Switch Statement Works.
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.
Aug 8, 2021 · The switch statement is used to select one of many code blocks to execute based on a condition. the value in the switch expression is compared to the different values provided; if there is a match the code block related to it will be executed; if there is no match the default block is executed; syntax:
Mar 5, 2024 · Learn more about the behavior of JavaScript's operators instanceof, typeof, new, this, the operator precedence, and more. Statements and declarations. Learn how do-while, for-in, for-of, try-catch, let, var, const, if-else, switch, and more JavaScript statements and keywords work. Functions.
Jun 20, 2017 · The switch statement evaluates an expression, matching the expression's value to a case clause, and executes statements associated with that case. Syntax. switch (expression) { case value1: //Statements executed when the result of expression matches value1. [break;] case value2: //Statements executed when the result of expression matches value2.
May 24, 2010 · 10 Answers. Sorted by: 405. If you're happy that your regex at the top is stripping away everything that you don't want to compare in your match, you don't need a substring match, and could do: switch (base_url_string) { case "xxx.local": // Blah.
