javascript - Repeated countdown -

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i'm trying write script in plain javascript counts down 2 specific points in time, 1 after other, repeating every day. i'm not sure how done.

specifically: have lunchtime, , have dinnertime on first day (both being date objects). every day, want following behaviour (more or less).

enter image description here

at lunch-time of first day, "lunch time" text in green. , there's countdown dinner-time of day. , once reach "dinner-time", following

enter image description here

and repeat every day, indefinitely. i'm not sure how done using pure javascript. currently, have handy piece of javascript thus:

times = [lunchtime, dinnertime]; var = new date(); var next = times.pop(); var timeremaining = - next.gettime(); settimeout(stylefxn, timeremaining);

the function stylefxn following:

    function stylefxn(){              //change styling on site }

and i'm able make time switch lunch dinner on first day, never again afterwards. of course, cannot assume lunch-time , dinner-time every day @ same time or have same intervals between each other!

it occurred me use times array within loop. however, found annoyingly confusing use settimeout within while-loop. specifically:

while((var = times.pop())!=null){       var = new date();       var timerem = now.gettime() - a.gettime();       settimeout(function(){             //do styling        }, timerem); }

that didn't work. can me out?

i not sure whether answers question or not think, problem can solved recursing through stylefxn. see following code along comments:

times = [lunchtime, dinnertime]; var = new date(); //you have used pop method have not specified how next lunch or dinner // time added times array // assume have method var next = times.pop(); var timeremaining = - next.gettime(); settimeout(stylefxn, timeremaining);  function stylefxn(){     //change styling on site     //this assumes have appropriate     // styling logic recursion     // method add new lunch ,     // dinner time times array     //call function/method update times array     = new date();     next = times.pop();     timeremaining = - next.gettime();     //**********************************     settimeout(styfxn,timeremaining);     //*********************************     // process repeat indefinitely  }

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