function showHelp()

in js/reveal.js [795:841]
35 lines of code
6 McCabe index (conditional complexity)

	function showHelp() {

		if( config.help ) {

			closeOverlay();

			dom.overlay = document.createElement( 'div' );
			dom.overlay.classList.add( 'overlay' );
			dom.overlay.classList.add( 'overlay-help' );
			dom.wrapper.appendChild( dom.overlay );

			let html = '<p class="title">Keyboard Shortcuts</p><br/>';

			let shortcuts = keyboard.getShortcuts(),
				bindings = keyboard.getBindings();

			html += '<table><th>KEY</th><th>ACTION</th>';
			for( let key in shortcuts ) {
				html += `<tr><td>${key}</td><td>${shortcuts[ key ]}</td></tr>`;
			}

			// Add custom key bindings that have associated descriptions
			for( let binding in bindings ) {
				if( bindings[binding].key && bindings[binding].description ) {
					html += `<tr><td>${bindings[binding].key}</td><td>${bindings[binding].description}</td></tr>`;
				}
			}

			html += '</table>';

			dom.overlay.innerHTML = `
				<header>
					<a class="close" href="#"><span class="icon"></span></a>
				</header>
				<div class="viewport">
					<div class="viewport-inner">${html}</div>
				</div>
			`;

			dom.overlay.querySelector( '.close' ).addEventListener( 'click', event => {
				closeOverlay();
				event.preventDefault();
			}, false );

		}

	}