<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>reveal.js - Test Iframes</title> <link rel="stylesheet" href="../css/reveal.css"> <link rel="stylesheet" href="qunit-2.5.0.css"> </head> <body style="overflow: auto;"> <div id="qunit"></div> <div id="qunit-fixture"></div> <div class="reveal" style="display: none;"> <div class="slides"> <section>1</section> <section>2</section> <section> <iframe class="default-iframe" data-src="#"></iframe> <iframe class="preload-iframe" data-src="#" data-preload></iframe> </section> </div> </div> <script src="../js/reveal.js"></script> <script src="qunit-2.5.0.js"></script> <script> Reveal.addEventListener( 'ready', function() { var defaultIframe = document.querySelector( '.default-iframe' ), preloadIframe = document.querySelector( '.preload-iframe' ); QUnit.module( 'Iframe' ); QUnit.test( 'Using default settings', function( assert ) { Reveal.slide(1); assert.strictEqual( defaultIframe.hasAttribute( 'src' ), false, 'not preloaded when within viewDistance' ); Reveal.slide(2); assert.strictEqual( defaultIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' ); Reveal.slide(1); assert.strictEqual( defaultIframe.hasAttribute( 'src' ), false, 'unloaded when slide becomes invisible' ); }); QUnit.test( 'Using data-preload', function( assert ) { Reveal.slide(1); assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'preloaded within viewDistance' ); Reveal.slide(2); assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'loaded when slide becoems visible' ); Reveal.slide(0); assert.strictEqual( preloadIframe.hasAttribute( 'src' ), false, 'unloads outside of viewDistance' ); }); QUnit.test( 'Using preloadIframes: true', function( assert ) { Reveal.configure({ preloadIframes: true }); Reveal.slide(1); assert.strictEqual( defaultIframe.hasAttribute( 'src' ), true, 'preloaded within viewDistance' ); assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'preloaded within viewDistance' ); Reveal.slide(2); assert.strictEqual( defaultIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' ); assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' ); }); QUnit.test( 'Using preloadIframes: false', function( assert ) { Reveal.configure({ preloadIframes: false }); Reveal.slide(0); assert.strictEqual( defaultIframe.hasAttribute( 'src' ), false, 'not preloaded within viewDistance' ); assert.strictEqual( preloadIframe.hasAttribute( 'src' ), false, 'not preloaded within viewDistance' ); Reveal.slide(2); assert.strictEqual( defaultIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' ); assert.strictEqual( preloadIframe.hasAttribute( 'src' ), true, 'loaded when slide becomes visible' ); }); } ); Reveal.initialize({ viewDistance: 2 }); </script> </body> </html>