日別アーカイブ: 2021年9月2日

JavaScript6(画面のスクロールを検知して発火)

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5.5から続く

1:画面のスクロールを検知してテキストアニメーションをする

mixinはいつもどおりなので省略

HTMLの記述

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <meta http-equiv="X-UA-Compatible" content="ie=edge" />
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css"
integrity="sha384-DNOHZ68U8hZfKXOrtjWvjxusGo9WQnrNx2sqG0tfsghAvtVlRW3tvkXWZh58N9jp"
crossorigin="anonymous"/>
<link href="https://fonts.googleapis.com/css2?family=Teko:wght@500&display=swap"
rel="stylesheet"/>
<link rel="stylesheet" href="style.css" />
  <title>Document</title>
</head>
<body>
  <section>
    <div class="animate-title">Start Animation</div>
  </section>
  <section>
    <div class="animate-title">Use what you have.</div>
  </section>
  <section>
    <div class="animate-title">Do what you can.</div>
  </section>
<!-- main.jsよりも先に読み込ませる -->
  <script src="text-animation.js"></script>
  <script src="main.js"></script>
</body>
</html>

SCSSの記述

@import "mixin";
html {
  font-family: "Teko", sans-serif;
}
body {
  margin: 0;
}
section {
  position: relative;
  height: 100vh;
  background-color: teal;

  &:nth-child(2) {
    background-color: mediumvioletred;
}
  &:nth-child(3) {
    background-color: orange;
 }
}
.animate-title,
.tween-animate-title {
  position: absolute;
// 文字が画面中央に来るようにする
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  opacity: 0;
  font-size: 2em;

  &.inview {
    opacity: 1;
  & .char {
    display: inline-block;
 }
}
  & .char {
    opacity: 0;
 }
}

.animate-title.inview .char {
@include animation(
$name: kf-animate-chars,
$duration: 0.5s,
$timing-function: cubic-bezier(0.39, 1.57, 0.58, 1),
$fill-mode: both
);

@for $i from 1 through 30 {
  &:nth-child(#{$i}) {
    animation-delay: $i * 0.04s;
  }
 }
}

@keyframes kf-animate-chars {
0% {
  opacity: 0;
  transform: translateY(-50%);
}

100% {
  opacity: 1;
  transform: translateY(0);
 }
}

main.jsの記述

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