javascript - 当militaryHour变量设置为0时，为什么系统打印0而不是我设置的小时(变量)12？

Question

我正在尝试构建一个程序，将军事时间转换为上午或下午时间。

我预计 0 的输出是上午 12 点，但实际输出是上午 0 点。

const militaryHour = 0;
    
var hour = 0;
var amOrPm = "am";
    
if (militaryHour < 12) {
    hour = militaryHour;
    console.log(hour + " " + amOrPm);
} else if (militaryHour == 12) {
    amOrPm = "pm";
    hour = 12;
    console.log(hour + " " + amOrPm);
} else if (militaryHour < 24) {
    amOrPm = "pm";
    hour = militaryHour - 12;
    console.log(hour + " " + amOrPm);
} else if (militaryHour == 24){
    hour = 12;
    console.log(hour + " " + amOrPm);
} else {
    hour = 12;
    console.log(hour + " " + amOrPm);
}

Answer 1

您需要的所有代码

const militaryHour = 0,
    hour = (militaryHour + 11) % 12 + 1,
    amOrPm = militaryHour % 24 < 12 ? 'am' : 'pm';

不需要 if/else