質問編集履歴
2
HTMLとCSSのソースコードを追加
test
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File without changes
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test
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@@ -13,6 +13,34 @@
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https://codepen.io/kami8ma8810/pen/KKgmQgr
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```HTML
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<div class="js-trigger">
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<img class="js-fadeIn" src="https://picsum.photos/seed/1/200/300" alt="">
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<img class="js-fadeIn" src="https://picsum.photos/seed/2/200/300" alt="">
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<img class="js-fadeIn" src="https://picsum.photos/seed/3/200/300" alt="">
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</div>
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```
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34
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```CSS
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36
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.js-fadeIn {
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opacity: 0;
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40
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}
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```
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1
jsソースコードを追加
test
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File without changes
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test
CHANGED
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@@ -13,3 +13,85 @@
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13
13
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14
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15
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https://codepen.io/kami8ma8810/pen/KKgmQgr
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16
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```JavaScript
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21
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// 監視対象
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const targets = document.querySelectorAll(".js-trigger");
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// オプション
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const options = {
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root: null,
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rootMargin: "-50% 0px",
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34
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threshold: 0
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};
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// オブジェクト生成
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const observer = new IntersectionObserver(doWhenIntersect, options);
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// targetを監視
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targets.forEach((target) => {
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50
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observer.observer(target);
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});
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const doWhenIntersect = (entries) => {
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entries.forEach((entry) => {
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60
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if (entry.isIntersecting) {
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63
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document.querySelectorAll(".js-fadeIn").forEach(function () {
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65
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gsap.fromTo(
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66
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".js-fadeIn",
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68
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{ y: 50 },
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{
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delay: 1,
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duration: 1.5,
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y: 0,
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opacity: 1,
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80
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ease: "power2.out",
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82
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stagger: 0.5
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84
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85
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}
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86
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87
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);
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88
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89
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});
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90
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91
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}
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92
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93
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});
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94
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95
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};
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96
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97
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```
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