main.js

document.getElementById('top-button').addEventListener('click', function () {
  window.scrollTo(0, 0);
});

$(window).scroll(function () {
  var threshold = 208;
  var op = (($(document).height() - $(window).height()) - $(window).scrollTop()) / threshold;
  if (op <= 13) {
    $("#top-button").show();
  } else {
    $("#top-button").hide();
  }
});

$('#switch1').on('click', function () {
  $('body').toggleClass('night')
})


$(document).ready(function () {
  var date = new Date();
  var current_time = date.getHours();
  if (current_time > 19 || current_time < 6)
    document.body.className = "night";
  else
    document.body.className = "";
});

$(window).load(function () {
  $("#top-button").hide();
});

$('.project_used span').on({
  mouseover: function () {
    event.preventDefault();
    $(this).animate({ opacity: 0.25 });
  },
  mouseout: function () {
    event.preventDefault();
    $(this).animate({ opacity: 1 });
  }
});