如何在一天中的特定时间频繁运行javascript中的function（）

Question

I have a function which runs every 3 minutes 24/7 using setTimeout(). The problem is that it fetches data from an API that have an maximum of request a month. I want to run it as often as a can but it´s unnecessary to do so when i am a sleep because of the waste of requests. How can in addition only run my script between for example 06:30:00 and 20:00:00?

Answer 1

You will need both setTimeout and Date() to achieve this : for eg

var now = new Date();
var millisTill10 = new Date(now.getFullYear(), now.getMonth(), now.getDate(), 10, 0, 0, 0) - now;
if (millisTill10 < 0) {
     millisTill10 += 86400000; // it's after 10am, try 10am tomorrow.
}
setTimeout(function(){alert("It's 10am!")}, millisTill10);

For more details please follow this

Answer 2

I have tested and verified following code. Mine is 7:22 PM which comes under these timings and it executes very well.

 // get todays strict timings // 06:30:00 and 20:00:00 setInterval(function() { lowerDate = new Date(); lowerDate.setHours(6); lowerDate.setMinutes(30); lowerDate.setSeconds(0); upperDate = new Date(); upperDate.setHours(20); upperDate.setMinutes(0); upperDate.setSeconds(0); todayDate = new Date(); if (todayDate > lowerDate && todayDate < upperDate) console.log("execute"); // execute only if in between these times }, 3 * 60 * 1000) //Every 3 minutes