dimanche 1 mars 2020

Change Div Background-color based on time of the day

I am using the following script, but I would like to apply it only to the first section of my site and not to the body. (the following code it's working but it applies underneath my #top section).

<script type="text/javascript">
  var now = new Date();
  var hours = now.getHours();
  //Keep in code - Written by Computerhope.com
  //Place this script in your HTML heading section
  document.write('It\'s now: ', hours, '<br><br>');
  document.bgColor="#CC9900";
  //18-19 night
  if (hours > 17 && hours < 20){
   document.write ('<body style="background-color: orange">');
  }
  //20-21 night
  else if (hours > 19 && hours < 22){
   document.write ('<body style="background-color: orangered">');
  }
  //22-4 night
  else if (hours > 21 || hours < 5){
   document.write ('<body style="background-color: #C0C0C0;">');
  }
  //9-17 day
  else if (hours > 8 && hours < 18){
   document.write ('<body style="background-color: #616D7E">');
  }
  //7-8 day
  else if (hours > 6 && hours < 9){
   document.write ('<body style="background-color: skyblue">');
  }
  //5-6 day
  else if (hours > 4 && hours < 7){
   document.write ('<body style="background-color: steelblue">');
  }
  else {
   document.write ('<body style="background-color: white">');
  }
</script>

The HTML part:

<section class="full-height section-scroll" id="top">
  <div class="os-animation" data-os-animation="fadeInUp" data-os-animation-delay="0s">
    <section class="intro-top">
      <h1>This is my H1</h1>
    </section>
</section>

And the CSS:

#top {
  height: 100vh;
  -webkit-transition: background-color 700ms linear;
     -moz-transition: background-color 700ms linear;
      -ms-transition: background-color 700ms linear;
       -o-transition: background-color 700ms linear;
          transition: background-color 700ms linear;
  background-color: rgba(253, 208, 7, 1);
  justify-content: center;
}

#top.scrolled {
  background-color: transparent
}

I have tried to change document.write ('<body style="background-color: orange">'); with document.getElementById("top").style.backgroundColor = "orange"; but still it doesn't work.

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