If you dont use it in your script, even the code blocks of cases that did not match will be executed. JavaScript Switch: Syntaxīefore we head to an example, we must know that a switch statement in js has an optional default. The switch JavaScript statement executes the code of the matched case and only stops running when it reaches the break statement. Let’s see the syntax of a switch statement in js. It takes a conditional expression just like an if statement but can have many conditionsor casesthat can match the result of the expression to run different blocks of code. Switch in JavaScript replaces the if checks, describing the comparison of a value with different variants. The JavaScript switch case is a multiple if else statement. This expression can be a byte, short, char, into, or any primitive data type. The switch statement evaluates an expression, compares its result with case values, and executes the statement associated with the matching case value. You could also display the name of the month. Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser. The switch statement evaluates its expression, then executes all statements that follow the matching case label. Do comment if you have any doubts or suggestions on this JS switch case. It then checks whether the first case expression evaluates to the same value as the result of the input. The switch statement executes a block of code depending on different cases. Simple example code performs arithmetic operations. A switch statement first evaluates its input expression. Its because the compiler generates a jump table for a switch during compilation. As we mentioned before, the JavaScript switch case is a dual-method branch statement, aiding in easy execution to various parts during the coding of a value of the expression or variable. Arithmetic operations using switch case in JavaScript. A switch statement works much faster than an equivalent if-else ladder.
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