質問編集履歴
2
HTMLとCSSのソースコードを追加
title
CHANGED
|
File without changes
|
body
CHANGED
|
@@ -7,6 +7,20 @@
|
|
|
7
7
|
|
|
8
8
|
https://codepen.io/kami8ma8810/pen/KKgmQgr
|
|
9
9
|
|
|
10
|
+
```HTML
|
|
11
|
+
<div class="js-trigger">
|
|
12
|
+
<img class="js-fadeIn" src="https://picsum.photos/seed/1/200/300" alt="">
|
|
13
|
+
<img class="js-fadeIn" src="https://picsum.photos/seed/2/200/300" alt="">
|
|
14
|
+
<img class="js-fadeIn" src="https://picsum.photos/seed/3/200/300" alt="">
|
|
15
|
+
</div>
|
|
16
|
+
```
|
|
17
|
+
|
|
18
|
+
```CSS
|
|
19
|
+
.js-fadeIn {
|
|
20
|
+
opacity: 0;
|
|
21
|
+
}
|
|
22
|
+
```
|
|
23
|
+
|
|
10
24
|
```JavaScript
|
|
11
25
|
// 監視対象
|
|
12
26
|
const targets = document.querySelectorAll(".js-trigger");
|
1
jsソースコードを追加
title
CHANGED
|
File without changes
|
body
CHANGED
|
@@ -5,4 +5,45 @@
|
|
|
5
5
|
|
|
6
6
|
よろしくお願いします。
|
|
7
7
|
|
|
8
|
-
https://codepen.io/kami8ma8810/pen/KKgmQgr
|
|
8
|
+
https://codepen.io/kami8ma8810/pen/KKgmQgr
|
|
9
|
+
|
|
10
|
+
```JavaScript
|
|
11
|
+
// 監視対象
|
|
12
|
+
const targets = document.querySelectorAll(".js-trigger");
|
|
13
|
+
|
|
14
|
+
// オプション
|
|
15
|
+
const options = {
|
|
16
|
+
root: null,
|
|
17
|
+
rootMargin: "-50% 0px",
|
|
18
|
+
threshold: 0
|
|
19
|
+
};
|
|
20
|
+
|
|
21
|
+
// オブジェクト生成
|
|
22
|
+
const observer = new IntersectionObserver(doWhenIntersect, options);
|
|
23
|
+
|
|
24
|
+
// targetを監視
|
|
25
|
+
targets.forEach((target) => {
|
|
26
|
+
observer.observer(target);
|
|
27
|
+
});
|
|
28
|
+
|
|
29
|
+
const doWhenIntersect = (entries) => {
|
|
30
|
+
entries.forEach((entry) => {
|
|
31
|
+
if (entry.isIntersecting) {
|
|
32
|
+
document.querySelectorAll(".js-fadeIn").forEach(function () {
|
|
33
|
+
gsap.fromTo(
|
|
34
|
+
".js-fadeIn",
|
|
35
|
+
{ y: 50 },
|
|
36
|
+
{
|
|
37
|
+
delay: 1,
|
|
38
|
+
duration: 1.5,
|
|
39
|
+
y: 0,
|
|
40
|
+
opacity: 1,
|
|
41
|
+
ease: "power2.out",
|
|
42
|
+
stagger: 0.5
|
|
43
|
+
}
|
|
44
|
+
);
|
|
45
|
+
});
|
|
46
|
+
}
|
|
47
|
+
});
|
|
48
|
+
};
|
|
49
|
+
```
|