在 JavaScript 中如何获取当天的秒数？

In JavaScript how to get second of current day?

提问by Kirill Titov

So the question is described in title. I need to get current second of the day using JavaScript.

所以问题在标题中描述。我需要使用 JavaScript 获取当天的当前秒数。

回答by T.J. Crowder

You add up the bits:

你把这些位加起来：

var dt = new Date();
var secs = dt.getSeconds() + (60 * dt.getMinutes()) + (60 * 60 * dt.getHours());

or if you prefer

或者如果你喜欢

var dt = new Date();
var secs = dt.getSeconds() + (60 * (dt.getMinutes() + (60 * dt.getHours())));

回答by fedosov

For example (in action):

例如（在行动中）：

?var today = new Date(), today_abs = new Date(), today_secs = 0;
today_abs.setHours(0);
today_abs.setMinutes(0);
today_abs.setSeconds(0);
today_secs = (today.getTime() - today_abs.getTime()) / 1000;?