06-js的选择结构
if的选择结构
//if...else... 类同java
if(a % 2 == 0){
console.log(a + "是偶数!");
} else {
console.log(a + "是奇数!");
}
switch…case… 类同java
let b = 4;
switch(b) {
case 1:
console.log("一");
break;
case 2:
console.log("二");
break;
default:
console.log("错误");
break;
}