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HTML

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                <div class="fadeBox">
  <p>↓↓　スクロールする　↓↓</p>
</div>
<div class="fadeBox">
  <p>要素が左右から現れる</p>
  <ul>
    <li class="fadeInRightTrigger itemBox">右からふわっと表示</li>
    <li class="fadeInLeftTrigger itemBox">左からふわっと表示</li>
 </ul>
</div>
!

CSS 

              
                /* base */
li {
  list-style: none;
}
.fadeBox {
  height: 600px;
}
.itemBox {
  width: 300px;
  height: 200px;
  background-color: #999;
  margin: 50px auto;
  border-radius: 10px;
  text-align: center;
  line-height: 70px;
}

/* 右からふわっと現れる */
/* jQueryで追加・削除 */
.fadeInRight {
  -webkit-animation-name: fadeInRightAnime;
          animation-name: fadeInRightAnime;   /*アニメーションの名前*/
  -webkit-animation-duration: 1s;
          animation-duration: 1s;             /*アニメーションの時間を1秒に設定*/
  -webkit-animation-fill-mode: forwards;
          animation-fill-mode: forwards;      /*アニメーション実行後、要素が表示されたままにする*/
}
@-webkit-keyframes fadeInRightAnime {
  0% {
    opacity: 0;                     /*非表示*/
    -webkit-transform: translateX(100px);
            transform: translateX(100px);   /*100px分横にずれる*/
  }
  100% {
    opacity: 1;                     /*表示*/
    -webkit-transform: translateX(0);
            transform: translateX(0);       /*元の位置*/
  }
}
@keyframes fadeInRightAnime {
  0% {
    opacity: 0;                     /*非表示*/
    -webkit-transform: translateX(100px);
            transform: translateX(100px);   /*100px分横にずれる*/
  }
  100% {
    opacity: 1;                     /*表示*/
    -webkit-transform: translateX(0);
            transform: translateX(0);       /*元の位置*/
  }
}
.fadeInRightTrigger {
  opacity: 0;                       /*非表示*/
}

/* 左からふわっと現れる */
/* jQueryで追加・削除 */
.fadeInLeft {
  -webkit-animation-name: fadeInLeftAnime;
          animation-name: fadeInLeftAnime;
  -webkit-animation-duration: 1s;
          animation-duration: 1s;
  -webkit-animation-fill-mode: forwards;
          animation-fill-mode: forwards;
}
@-webkit-keyframes fadeInLeftAnime {
  0% {
    opacity: 0;
    -webkit-transform: translateX(-100px);
            transform: translateX(-100px); 
  }
  100% {
    opacity: 1;
    -webkit-transform: translateX(0);
            transform: translateX(0);
  }
}
@keyframes fadeInLeftAnime {
  0% {
    opacity: 0;
    -webkit-transform: translateX(-100px);
            transform: translateX(-100px); 
  }
  100% {
    opacity: 1;
    -webkit-transform: translateX(0);
            transform: translateX(0);
  }
}
.fadeInLeftTrigger {
  opacity: 0;
}
!

JS 

              
                $(function() {
  // スクロールイベント
  $(window).scroll(function() {
    // ふわっとスライドを呼び出す
    fadeInRightAnime();
    fadeInLeftAnime();
  });

  // 右からふわっとスライドの処理
  function fadeInRightAnime() {
    $('.fadeInRightTrigger').each(function() {
      // 発火する位置の座標から-50pxし、変数targetに代入する
      let target = $(this).offset().top -= 50;
      // スクロール量を取得し、変数scrollに代入する
      let scroll = $(window).scrollTop();
      // 表示画面の高さを取得し、変数windowHeightに代入する
      let windowHeight = $(window).height();
      // もし、発火する位置から表示画面の高さ+100pxを引いた数値よりscrollの高さが大きかったら
      if(scroll > target - windowHeight + 100) {
        // .fadeInRightを追加する
        $(this).addClass('fadeInRight');
      } else {
        // .fadeInRightを削除する
        $(this).removeClass('fadeInRight');
      }
    });
  };

  // 左からふわっとスライドの処理
  function fadeInLeftAnime() {
    $('.fadeInLeftTrigger').each(function() {
      let target = $(this).offset().top -= 50;
      let scroll = $(window).scrollTop();
      let windowHeight = $(window).height();
      if(scroll > target - windowHeight + 100) {
        $(this).addClass('fadeInLeft');
      } else {
        $(this).removeClass('fadeInLeft');
      }
    });
  }; 
});
!
999px

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