Now let us study about switch case in JavaScript. Description The first and foremost action the switch statement does is to evaluate the expression. Firstly, it evaluates the first case in the list of cases written in the code to the result of the expression given as an input. The ...
JavaScript中的if-else语句。在上一篇文章中我们已经看到, 我们可以使用if-else语句根据某些特定条件执行操作。也就是说, 如果条件为true, 则执行某些任务;否则, 如果条件为false, 则执行其他任务。 JavaScript中的switch case语句也用于决策制定。在某些情况下,使用switch case语句比使用if-else语句更方便。考虑这样一...
There was only the accepted // parameter fruit, which should either be used or changed to color switch(color) { case "apple": "green"; return "green"; // Like this break; case "banana": "yellow"; // ^ break; case "kiwi": "green"; // ^ break; case "plum": "red"; // ^ ...
consthero='Batman';letsidekick;switch(hero){case'Batman':sidekick='Robin';// Unless there's a `break`, JavaScript will execute the next// `case` block.// break;case'Aquaman':sidekick='Aqualad';break;case'Superman':sidekick='Jimmy Olsen';break;default:thrownewError('Unknown hero');}//...
I tried to make a line break in a case switch with \n and < br > and tried the methods from here -- all of which I put inside the quotations where I wanted my breaks to occur. None of them seem to work. However, there might be a way to create a line break with overflow and...
本文主要介绍JavaScript switch case语句。 1、switch case流程图 switch case语句的执行流程,如下图, 语法 switch语句的目的是根据表达式的值给出一个要计算的表达式和几个要执行的不同语句。解释器会根据表达式的值判断每种case,直到找到匹配的case。如果没有匹配,将使用default默认条件。 switch (expression) { ...
switch 语句是 JavaScript 的"条件"语句的一部分,用于根据不同的条件执行不同的操作。使用 switch 选择要执行的许多代码块之一。这是长的嵌套 if/else 语句的完美解决方案。switch 语句计算表达式。然后将表达式的值与结构中每个 case 的值进行比较。如果匹配,则执行关联的代码块。
JavaScript(JS) 条件判断语句(switchcase) JavaScript 条件判断可以使用多个if…Else…if语句用于执行多路分支。但这并不总是最好的解决方案,特别是当所有分支都依赖于单个变量的值时。从JavaScript 1.2开始,可以使用一个switchcase语句来处理这种情况,而不用重复if…else if语句。本文主要介绍JavaS ... ...
JavaScript Control Flow JavaScript - If...Else JavaScript - While Loop JavaScript - For Loop JavaScript - For...in Javascript - For...of JavaScript - Loop Control JavaScript - Break Statement JavaScript - Continue Statement JavaScript - Switch Case JavaScript - User Defined Iterators JavaScript Fun...
Some scenarios in which switch case can be used include: Handling user input Parsing API responses Handling errors or exceptions Conclusion Switch case is a useful control statement in JavaScript that provides an alternative to using long if-else statements. It is useful for handling user input, ...