问题描述
我有两个< input type = time> 。默认情况下，每个输入都将时间值作为字符串收集。例如， 08:30 。
I have two <input type="time">. By default, each input collects a time value as a string. For example, "08:30".
如何将该字符串转换为对象，然后该对象将启用计算？
How can I convert this string into an object which would then enable computation? Is it possible to avoid involving the use of date in this approach?
最后，我想避免在这种方法中使用 date 吗？计算两个时间字符串之间的差，然后以 minutes 返回结果。例如，预期的返回值 08:00 和 09:00 将为 60 分钟。
In the end, I would like to compute the difference between two time strings and then return the result in minutes. For example, the expected return value of08:00 and 09:00 would be 60 minutes.
推荐答案
就像只用纸和笔一样做：
Just do it as if you only had pen and paper:
- 12:45 => 12× 60 + 45 = 765分钟
- 08:30 => 8× 60 + 30 = 510分钟
- 765-510 = 255
- 整数除法：255/60 = 4小时
- 剩余：255-60× 4 = 15分钟
- 结果：04：15
- 12:45 => 12 × 60 + 45 = 765 minutes
- 08:30 => 8 × 60 + 30 = 510 minutes
- 765 - 510 = 255
- Integer division: 255 / 60 = 4 hours
- Remainer: 255 - 60 × 4 = 15 minutes
- Result: 04:15
您可以使用常规从字符串中进行解析表达式：
You can parse from string using regular expressions:
var parts = "08:45".match(/^(\d+):(\d+)$/);
console.log(+parts[1], +parts[2], +parts[1] * 60 + +parts[2]);...并且格式化为字符串也不是很困难。
... and formatting back to string should not be very difficult either.
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