如何使用JavaScript将当前时间与格式化为字符串的时间范围进行比较 [英] How to compare current time to a time range formated as a string using Javascript

问题描述

我在数据库中两次将其格式化为字符串，它们的格式分别为8:30 AM和9:00 PM。我希望使用Javascript来获取当前时间，而不是看我是否在两次时间范围内。我该怎么做

I have two times formatted as strings in my database, they are in the format 8:30AM and 9:00 PM respectively. Using Javascript, I wan't to get the current time and see if I am within the rang of the two times. How would I go about doing this

推荐答案

将开始时间，结束时间和当前时间转换为JavaScript Date对象，然后检查开始< =当前<结束。如果开始日期小于结束日期，则会变得棘手：

Convert the start, end and current time into JavaScript Date objects, then check if start <= current < end. It gets tricky if the start date becomes less than end date:

// The un-important bits
var d0 = new Date("01/01/2001 " + "8:30 AM");
var d1 = new Date("01/01/2001 " + "9:00 PM");
var d = new Date("01/01/2001");
d.setHours(new Date().getHours());
d.setMinutes(new Date().getMinutes());

// For testing
console.log(d0, d, d1);

// The important bit
console.log(
    d0 < d1
        ? (d0 <= d && d < d1)
        : (d1 <= d && d < d0) == false
);

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