我如何将这个三元运算写成条件语句？

Question

您好，我想知道如何将以下三元运算编写为常规条件语句。如果有人可以让我知道，将不胜感激，这里是代码：

h1.textContent = "Time : " + (minutes ? (minutes > 9 ? minutes : "0" + minutes) : "00") + ":" + (seconds > 9 ? seconds : "0" + seconds);

Answer 1

它会是这样的：

var text = "Time : ";
if (minutes){
    if (minutes > 9){
        text += minutes;
    }
    else{
        text += "0" + minutes;
    }
}
else{
    text += "00";
}
text += ":";
if (seconds > 9){
    text += seconds;
}
else{
    text += "0" + seconds;
}
h1.textContent = text;

就我个人而言，我宁愿坚持使用三进制

Answer 2

一个简单的"conditional statements"替代方案

var minutesS = minutes;
if (minutes < 10) minutesS = '0' + minutes;

var secondsS = seconds;
if (seconds < 10) seconddS = '0' + seconds;

h1.textContent = "Time : " + minutesS + ":" + secondsS;

Answer 3

您可以使用一个函数和一些字符串方法。

function twoDigits(value) {
    return ('00' + value.toString()).slice(-2);
}


h1.textContent = "Time : " + twoDigits(minutes) + ":" + twoDigits(seconds);

我如何将这个三元运算写成条件语句？

How would I write this ternary operation as a conditional statement?

javascript

conditional

ternary-operator