forked from Gitlink/forgeplus-react
121 lines
2.7 KiB
HTML
121 lines
2.7 KiB
HTML
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=edge" />
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<title>Scrollama: Basic Example</title>
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<meta name="description" content="Scrollama: Basic Example" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<link rel="stylesheet" href="../style.css" />
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<style>
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#scrolly {
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position: relative;
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}
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article {
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position: relative;
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padding: 0 1rem;
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margin: 0 auto;
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width: 33%;
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}
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.step {
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margin: 2rem auto 4rem auto;
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background-color: #3b3b3b;
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color: #fff;
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}
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.step.is-active {
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background-color: goldenrod;
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color: #3b3b3b;
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}
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.step p {
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text-align: center;
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padding: 1rem;
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font-size: 1.5rem;
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}
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</style>
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</head>
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<body>
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<main>
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<section id="intro">
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<h1 class="intro__hed">Basic Example</h1>
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<p class="intro__dek">
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Start scrolling to see how it works.
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</p>
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</section>
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<section id="scrolly">
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<article>
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<div class="step" data-step="1">
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<p>STEP 1</p>
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</div>
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<div class="step" data-step="2">
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<p>STEP 2</p>
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</div>
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<div class="step" data-step="3">
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<p>STEP 3</p>
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</div>
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<div class="step" data-step="4">
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<p>STEP 4</p>
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</div>
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</article>
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</section>
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<section id="outro"></section>
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</main>
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<script src="../scrollama.min.js"></script>
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<script>
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var scrolly = document.querySelector("#scrolly");
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var article = scrolly.querySelector("article");
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var step = article.querySelectorAll(".step");
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// initialize the scrollama
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var scroller = scrollama();
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// scrollama event handlers
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function handleStepEnter(response) {
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// response = { element, direction, index }
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console.log(response);
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// add to color to current step
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response.element.classList.add("is-active");
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}
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function handleStepExit(response) {
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// response = { element, direction, index }
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console.log(response);
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// remove color from current step
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response.element.classList.remove("is-active");
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}
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function init() {
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// set random padding for different step heights (not required)
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step.forEach(function (step) {
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var v = 100 + Math.floor((Math.random() * window.innerHeight) / 4);
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step.style.padding = v + "px 0px";
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});
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// 1. setup the scroller with the bare-bones options
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// this will also initialize trigger observations
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// 2. bind scrollama event handlers (this can be chained like below)
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scroller
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.setup({
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// provide root element which is passed to IntersectionObserver as the root option
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root: document,
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step: "#scrolly article .step",
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debug: false,
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offset: 0.5
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})
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.onStepEnter(handleStepEnter)
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.onStepExit(handleStepExit);
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}
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// kick things off
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init();
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</script>
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</body>
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</html>
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