如果JavaScript 遇到 break 关键词,它会跳出 switch 代码块。此举将停止代码块中更多代码的执行以及 case 测试。如果找到匹配,并完成任务,则随机中断执行(break)。无需更多测试。break 能够节省大量执行时间,因为它会"忽略" switch 代码块中的其他代码的执行。
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 code block } This is how it works:The switch expression is evaluated once. The value...
When JavaScript reaches abreakkeyword, it breaks out of the switch block. This will stop the execution inside the switch block. 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 ...
switch (varName) { case checkPatternAdministrator(varName): alert('Hey'); break; case checkPatternUserTypeA(varName): alert('Hey2'); break; case checkPatternUserTypeB(varName): alert('Hey3'); break; default: alert('Default case'); break; } function checkPatternAdministrator(varName) ...
case 6: shortDay = "Sat", longDay = "Saturday" } Comma operator 首先,JavaScript中有一个逗号运算符,它总是返回最后一个元素。例如: const x = (1, 2, 3, 4, 5) console.log(x) // 5 So this: switch (1 === month.length && (month = "0" + month), 1 === day.length && (day...
int day = 2; switch () {1: Console.WriteLine("Monday"); break;2: Console.WriteLine("Tuesday");; } Submit Answer » Start the Exercise ❮ PreviousNext ❯ W3schools Pathfinder Track your progress - it's free! Log inSign Up
数组中用于模式匹配的javaScript占位符 、、、 我有一个这样的js数组: let data = [{status:"stay",points:[1,2,3,4,5]}, {status:"move",points:[1,2,3,4,5]},{status:"stay",points:[1,2,3,4,5]}] 我想做一些模式匹配,下面是我的代码: switch (data){ case [{status:"move",_},{st...
case "Radio": editQuestionBlockHTML += +' ' +' Radio Button' +' Check Box ' +' Pull Down Menu' +' Rating Scale' +' Comment Box' +' Single Text Box
if you can reprogam all your game in html5/javascript so you can then switch in pure html/js mode. but if it's not the case so just follow what I said above Votes Upvote Translate Translate Report Report Reply byebyeflashplayer ...
我正在研究关于的w3schools (标题为:“语句规则”),他们说“始终以分号结束简单的语句。”和:“不要以分号结束复杂的语句。”他们没有定义简单和复杂语句之间的区别,彻底的在线搜索也没有提供答案。所以我仍然对JavaScript分号的位置感到困惑。如果有任何帮助,我将不胜感激。 浏览41提问于2016-08-03得票数 1 ...