This JavaScript tutorial explains how to use the switch statement with syntax and examples. In JavaScript, the switch statement is used to execute code based on the value of an expression.
In addition toif...else, JavaScript has a feature known as aswitchstatement.switchis a type of conditional statement that will evaluate an expression against multiple possible cases and execute one or more blocks of code based on matching cases. Theswitchstatement is closely related to a conditio...
The switch statement is used to perform different actions based on different conditions.The JavaScript Switch StatementUse the switch statement to select one of many blocks of code to be executed.Syntaxswitch(expression) { case n: code block break; case n: code block break; default: default ...
It is not necessary to break the last case in a switch block. The block breaks (ends) there anyway. Note:If you omit the break statement, the next case will be executed even if the evaluation does not match the case. The default Keyword ...
The switch case statement may trip up even the most seasoned JavaScript developer. I use this statement often, especially in my nodejs AWS Lambdas, where my business heavy logic resides. Like other curly braced, C based languages, your JavaScript can benefit from a switch statement. ...
switch statement Input Grade type : CopyJS Codefunction marksgrade() { grade = document.form1.text1.value; switch (grade) { case 'A+': console.log("Marks >= 90"); break; case 'A': console.log("Marks [ >= 80 and <90 ]"); break; case 'B+': console.log("Marks...
In such cases, theswitchstatement is skipped entirely and the program flow goes to the line that comes after the body of theswitchstatement. What happens when we use a switch statement without break? So far, we have used abreakstatement inside eachcaseblock. For example, ...
在JavaScript 中,switch语句通常用于根据变量的值执行不同的代码块。在事件处理程序中,switch语句可以用于根据触发事件的对象或属性来执行不同的操作。 以下是一个简单的示例,演示了如何在事件处理程序中使用switch语句: HTML 代码: <!DOCTYPEhtml>Switch statement in event handlerButton 1Button 2Button 3 JavaScript...
statementsN // 当表达式的结果等于 valueN 时,则执行该代码 break; default : statements // 如果没有与表达式相同的值,则执行该代码 } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. switch 语句根据表达式的值,依次与 case 子句中的值进行比较: ...
In this example, we have a simple functionWithSwitch() function that includes the switch statement and returns three different values based on the parameter value. Instead of defining all of this within JSX, we do it separately, reference the function, and pass it to the desired value. Inline...