In JavaScript, the switch statement is used to execute code based on the value of an expression.Syntax The syntax for the switch statement in JavaScript is: switch (expr) { case value1: // statements to execute
Usingswitch, we will send a message to the console each day of the week. The program will run in order from top to bottom looking for a match, and once one is found, thebreakcommand will halt theswitchblock from continuing to evaluate statements. week.js // Set the current day of the...
Thedefaultcase does not have to be the last case in a switch block: Example switch(newDate().getDay()) { default: text ="Looking forward to the Weekend"; break; case6: text ="Today is Saturday"; break; case0: text ="Today is Sunday"; ...
The switch statement is a fundamental coding pattern, supported by just about every language. Because JavaScript offers rich of the switch statement. Developers can utilize the switch statement to replace complex if else statements.
Visually the statements appear much more cohesive and more similar to other control structures (for-loop, if-statement, etc.) The braces create a block scope, this means that you can define unique, scoped variables vialetwithout bumping into the statements in other cases. ...
statements: Group of statements that are executed once if the expression matches the label. Example: In the following example, switch statement is used to display the marks range against a particular grade. HTML Code <!DOCTYPE html> JavaScript Switch ...
JavaScript Switch...Case StatementsIn this tutorial you will learn how to use the switch...case statement to test or evaluate an expression with different values in JavaScript.Using the Switch...Case StatementThe switch..case statement is an alternative to the if...else if...else statement,...
statements1 // 当表达式的结果等于 value1 时,则执行该代码 break; case value2: statements2 // 当表达式的结果等于 value2 时,则执行该代码 break; ... case valueN: statementsN // 当表达式的结果等于 valueN 时,则执行该代码 break; default...
switch 是一个条件语句,根据表达式的值来执行对应的语句,可以把它想象为多分支 if 语句。 关键点 1. 执行表达式 2. case 块 3. (可选)默认块 语法 代码语言:javascript 代码运行次数:0 运行 AI代码解释 switch(expressopm){casevalue1://Statements executed when the//result of expression matches value1bre...
statements// 如果没有与表达式相同的值,则执行该代码 } switch 语句根据表达式的值,依次与 case 子句中的值进行比较: 如果两者相等,则执行其后的语句段,当遇到 break 关键字时则跳出整个 switch 语句。 如果不相等,则继续匹配下一个 case。 switch 语句包含一个可选的 default 关键字,如果在前面的 case 中没...