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- <!doctype html>
- <html lang="en">
- <head>
- <meta charset="utf-8">
- <title>reveal.js - Test Iframe Backgrounds</title>
- <link rel="stylesheet" href="../dist/reveal.css">
- <link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
- <script src="../node_modules/qunit/qunit/qunit.js"></script>
- </head>
- <body style="overflow: auto;">
- <div id="qunit"></div>
- <div id="qunit-fixture"></div>
- <div class="reveal" style="display: none;">
- <div class="slides">
- <section data-background-iframe="https://revealjs.com">1</section>
- <section data-background-iframe="https://revealjs.com">2</section>
- <section data-background-iframe="https://revealjs.com" data-preload>3</section>
- <section data-background-iframe="https://revealjs.com">4</section>
- <section data-background-iframe="https://revealjs.com">5</section>
- <section data-background-iframe="https://revealjs.com">6</section>
- </div>
- </div>
- <script src="../dist/reveal.js"></script>
- <script>
- Reveal.initialize({ viewDistance: 3 }).then( () => {
- function getIframe( index ) {
- return document.querySelectorAll( '.slide-background' )[index].querySelector( 'iframe' );
- }
- QUnit.module( 'Iframe' );
- QUnit.test( 'Using default settings', function( assert ) {
- Reveal.slide(0);
- assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'not preloaded when within viewDistance' );
- Reveal.slide(1);
- assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
- Reveal.slide(0);
- assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'unloaded when slide becomes invisible' );
- });
- QUnit.test( 'Using data-preload', function( assert ) {
- Reveal.slide(1);
- assert.strictEqual( getIframe(2).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
- assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
- Reveal.slide(0);
- assert.strictEqual( getIframe(3).hasAttribute( 'src' ), false, 'unloads outside of viewDistance' );
- });
- QUnit.test( 'Using preloadIframes: true', function( assert ) {
- Reveal.configure({ preloadIframes: true });
- Reveal.slide(1);
- assert.strictEqual( getIframe(0).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
- assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
- assert.strictEqual( getIframe(2).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
- });
- QUnit.test( 'Using preloadIframes: false', function( assert ) {
- Reveal.configure({ preloadIframes: false });
- Reveal.slide(0);
- assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'not preloaded within viewDistance' );
- assert.strictEqual( getIframe(2).hasAttribute( 'src' ), false, 'not preloaded within viewDistance' );
- Reveal.slide(1);
- assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
- });
- } );
- </script>
- </body>
- </html>
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