Chrome Extension: Detecting New Day (day Changed) In Javascript?

I know there's not a event listener for a new day (or hour/minute, for that matter). But in my Chrome Extension, I need to know when a new day has started, and which means I'll hav

Solution 1:

If you mean a new day for the user, you can set a single timeout when the page loads.

functionsetnewdaytimer(){
    if(window.newdaytimer) clearTimeout(newdaytimer);
    var now= newDate,
    tomorrow= newDate(now.getFullYear(), now.getMonth(), now.getDate()+1); 
    window.newdaytimer= setTimeout(newdayalarm, tomorrow-now);
}
functionnewdayalarm(){
    alert((newDate()).toLocaleTimeString());
}

window.onload=setnewdaytimer;

Solution 2:

Depending how exact you want to be, the only way doing this is by setting an interval. You can set your precision to be whatever you want. 1min 5min 10min