JavaScript switch case语句在我们之前的文章中,我们已经学习了如何在JavaScript中使用if-else语句进行决策。我们已经看到,我们可以使用if-else语句基于特定条件执行某些任务,如果条件为真,执行任务A,如果条件为假,执行任务B。在JavaScript中,switch case语句也用于决策目的。在某些情况下,使用switch case语句比if-else语句...
Examples demonstrating Switch case in JavaScript 1st Example: In the first example, we find the remark associated with a particular grade. The code is used in a school system to find out the correct remark for a particular grade in the range from ‘a’ to ‘f’, any other letter is not...
Thebreakstatement after each case ensures that the program gets broken out once the case gets matched with the result of the expression given as an input. There might be cases where we omit the break statement after a case. At that time the switch statement continues to evaluate the case wr...
Flowchart of JavaScript switch statement Example 1: Simple Program Using switch...case Suppose we want to display a message based on the current day of the week. Let's look at the example below to see how we can achieve this using switch...case. let day = 3; let activity; switch ...
#include<bits/stdc++.h> using namespace std; // Function to convert number into string string numbers_to_strings(int argument){ switch(argument) { case 0: return "zero"; case 1: return "one"; case 2: return "two"; default: return "nothing"; }; }; // Driver program int main()...
switch语句计算一个表达式,并根据它执行一个代码块case表达式。 consthero='Batman';letsidekick;switch(hero){case'Batman':sidekick='Robin';break;case'Aquaman':sidekick='Aqualad';break;case'Superman':sidekick='Jimmy Olsen';break;default:thrownewError('Unknown hero');}sidekick;// 'Robin' ...
Switch case and if-else offer two different approaches to writing conditional statements in JavaScript. Here’s how to determine which one to use.
正则表达式是一种用于匹配字符串的模式,可以用于搜索、替换等操作。在JavaScript中,可以使用RegExp对象来创建正则表达式。 在JavaScript中,可以使用正则表达式作为switch c...
If break is omitted, the program continues execution at the next statement in the switch statement. Examples Using switch In the following example, if expr evaluates to "Bananas", the program matches the value with case "Bananas" and executes the associated statement. When break is encountered,...
如何使用switch语句javascript创建函数 我现在开始学习JS,我需要用switch语句做下面的练习。 function colorMix (color1, color2){ if ((color1 === 'red' && color2 === 'blue') || (color1 === 'blue' && color2 === 'red')){ return 'violet';...