js 条件判断语句

在JavaScript中，有多种条件判断语句，包括if...else，switch，和ternary operator。
 

1. if...else语句：

   let num = 10;if (num > 5) {console.log("Number is greater than 5");
   } else {console.log("Number is less than or equal to 5");
   }

2. switch语句：

   let day = 3;switch (day) {case 1:console.log("Monday");break;case 2:console.log("Tuesday");break;case 3:console.log("Wednesday");break;// 你可以添加更多的case语句default:console.log("Invalid day");
   }

3. ternary operator：

   let num = 10;num > 5 ? console.log("Number is greater than 5") : console.log("Number is less than or equal to 5");