在 JavaScript 中将时间拆分为小时、分钟、秒
要将时间拆分为小时、分钟和秒，请在时间字符串上调用 split() 方法，将分隔符作为参数传递给它，例如 time.split(':')。 split 方法将返回一个包含 3 个字符串的数组——小时、分钟和秒。
const time = '09:30:46';
const [hours, minutes, seconds] = time.split(':');
console.log(hours); // 👉️ "09"
console.log(minutes); // 👉️ "30"
console.log(seconds); // 👉️ "46"
我们传递给 String.split 方法的唯一参数是分隔符，我们要在其上拆分字符串，在我们的例子中是一个冒号。
const time = '09:30:46';
// 👇️ ['09', '30', '46']
console.log(time.split(':'));
String.split方法返回一个包含 3 个元素的数组 - 小时、分钟和秒。
我们使用解构赋值将数组中的值赋给小时、分钟和秒变量。
const [a, b, c] = [1, 2, 3];
console.log(a); // 👉️ 1
console.log(b); // 👉️ 2
console.log(c); // 👉️ 3
使用解构赋值时，变量会以相同的顺序从数组中赋值。
最终结果由 3 个字符串组成，我们可以根据用例对其进行操作。
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