برندینگ و برندسازی: Javascript detect 10 minutes before variable time

۱۳۹۶ آبان ۱۰, چهارشنبه

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I'm using javascript, how to check the current time is lower than 10 minutes from variable nextTime?

var currentTime = "11:25:00";
var nextTime = "11:35:00";

if(currentTime <= nextTime)

 alert("test");

If I do like code above, time before 11:35:00 it always alert me.

What I want detect 10 minutes before nextTime, so it will always alert once.

Any idea?

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