我是JavaScript的初学者,我试图在if/else语句中调用字符串数组。这就是我拥有的。它可以正常工作,但是执行此操作的方法较短。我不想使用任何其他方法。我只想坚持如果/else语句。 在这里输入代码 var welcomeMessage = prompt("what is your name?").toLowerCase(); var names = ["b
In JavaScript we have the following conditional statements: Useifto specify a block of code to be executed, if a specified condition is true Useelseto specify a block of code to be executed, if the same condition is false Useelse ifto specify a new condition to test, if the first condit...
The above code also contains no conditions for the else statement. This means that the program will perform either the statement which is contained within the if statement or the code contained within the else statement. But you could add a condition to the else statement in which case the pr...
In the above example, the outer if condition checks if a student has passed or failed using the condition marks >= 40. If it evaluates to false, the outer else statement will print Failed.On the other hand, if marks >= 40 evaluates to true, the program moves to the inner if...else...
However, if we only need to log anot activestatement and not theactivestatement. So there is no way for us to log thenot activewithout having to change the conditional logic. That’s where aif notstatement comes in. With aif notstatement, we will not need to have aelsestatement. Then,...
Menu Selection: Interactive menus benefit from “if-else” statements. In a basic calculator program, users can choose an operation by entering a number, and the program responds accordingly: int choice; printf("Select operation:n1. Additionn2. Subtractionn3. Multiplicationn4. Divisionn"); scanf(...
对于多分支的情况,switch语句通常比多个if-else更清晰。 代码语言:txt 复制 switch (value) { case 'A': // 处理逻辑 break; case 'B': // 处理逻辑 break; default: // 默认处理逻辑 } 6. 使用函数式编程 利用高阶函数和数组方法(如filter、map、reduce)来处理复杂的逻辑。
// 1.双分支if(表达式1) { 代码块1; }else{ 代码块2; }// 2.多分支if(表达式1) { }elseif(表达式2) { } ...elseif(表达式2) { }else{ } if 嵌套 if(表达式1) {if(表达式2) { }... }... 2、switch语句 switch(表达式) {case值1: 代码块1;break;case值2: 代码块2;break;default:...
if(myNum == 7){document.write("Lucky 7!");}else{document.write("You're not very lucky today...");}//--> Display: You're not very lucky today... Found Something Wrong in this Lesson? - Your input is what keeps Tizag improving with time!
js & async await & if else All In One asyncsetDynamicAdData () {if(this.isCopyPush) {this.setDynamicCopyPushCreativeList();// this.copyDynamicCreativeList();}else{awaitthis.getDynamicCreativeList(); }// await this.getDynamicCreativeList();}, ...