滚动显示不起作用

Scroll reveal not working

我在阅读 THIS 教程并使用他们的代码后尝试使用 scrollReveal.js,当我的视口在它们上时,我仍然无法让我的 div 淡入。

Html

<head>
<script src="scrollreveal-master/dist/scrollreveal.min.js"></script>
</head>

<div data-sr>This is the first div</div>
<div data-sr>This is the second div</div>
<div data-sr>This is yet another div</div>

javascript

new scrollReveal();

当我在我的网页上查看控制台时,它显示

"未捕获的 ReferenceError: scrollReveal 未定义"

像这样尝试使用 scrollReveal 在滚动时添加动画

<!DOCTYPE html>
<html>

  <head>
    <meta charset="utf-8" />
    <title></title>
    <link rel="stylesheet" href="style.css" />


</head>

<body>

<div id="main">

<div data-sr> one </div>
<div data-sr> two </div>
<div data-sr> three </div>

</div>

<script src="https://unpkg.com/scrollreveal@3.3.2/dist/scrollreveal.min.js"></script>

<script>

// Changing the defaults
window.sr = ScrollReveal({ reset: true });

// Customizing a reveal set
sr.reveal('div', {opacity: 0.9,duration:3000});

</script>

</body>

</html>

工作示例:https://plnkr.co/edit/qC33zle0fafyAL0RjkVl?p=preview