js/page/skooma.html

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<h1>Skooma.js</h1>

<code-block>import {html} from 'skooma.js'</code-block>

<section>
	<h2>Introduction & Scope</h2>
	<p>
		Skooma.js is a library for generating DOM nodes within JavaScript.
	</p>

	<h3>What are the benefits of Skooma?</h3>
	<p>
		Skooma is only a small <file-size file="../skooma.js"></file-size> ES6
		module that uses meta-programming to turn JavaScript into a
		<span title="Domain-Specific Language">DSL</span> that generates HTML
		and XML subtrees.
		<br>
		This means you're writing plain JavaScript code that needs no additional
		transpilation steps and runs directly in the browser.
	</p>
</section>

<section>
	<h2>Showcase</h2>

	<p>Here's a few examples of how things are done in Skooma.js and how it compares to vanilla JavaScript.</p>

	<div class="columns">
		<h3>Skooma.js</h3>
		<h3>Vanilla JavaScript</h3>

		<p>Generating a single empty HTML element. The <code>html</code> namespace creates generator functions dynamically.</p>
		<p>Using the browser API, this is a bit more verbose, but still looks similar.</p>
		<code-block>
			return html.h1()
		</code-block>
		<code-block>
			return document.createElement("h1")
		</code-block>

		<p>String arguments to the generator function will be inserted as <strong>text nodes</strong>.</p>
		<p>Without Skooma.js this would already require using a variable since <code>createElement</code> cannot insert text content into a new node.</p>
		<code-block>
			return html.h1("Hello, World!")
		</code-block>
		<code-block>
			let h1 = document.createElement("h1")
			h1.innerText = "Hello, World!"
			return h1
		</code-block>

		<p>DOM Nodes can also be passed into the generator function to add them as <strong>child-elements.</strong></p>
		<p>This would normally require two separate variables, one for each element.</p>
		<code-block>
			return html.div(html.b("Hello!"))
		</code-block>
		<code-block>
			let div = document.createElement("div")
			let b = document.createElement("b")
			b.innerText = "Hello!"
			div.append(b)
			return div
		</code-block>

		<p>When passing an object, its key/value pairs will be added as <strong>attributes</strong> to the new element.</p>
		<p>Once again, in plain JS this requires a variable.</p>
		<code-block>
			return html.div({attribute: "value"})
		</code-block>
		<code-block>
			let div = document.createElement("div")
			div.setAttribute("attribute", "value")
			return div
		</code-block>

		<p>When an object value is a function, it will instead be added as an <strong>event handler</strong>. The corresponding key will be used as the event name.</p>
		<p>You guessed it: variable.</p>
		<code-block>
			return html.button("Click Me!", {
				click: event =&gt; console.log(event)
			})
		</code-block>
		<code-block>
			let button document.createElement("button")
			button.innerText = "Click Me!"
			button.addEventListener(
				"click", event =&gt; console.log(event)
			)
			return button
		</code-block>

		<p>Adding a <strong>shadow-root</strong> to the new element can be done witht he <code>shadowRoot</code> property.</p>
		<p></p>
		<code-block>
			return html.div({
				shadowRoot: html.p("Shadow-DOM text content")
			}, "Light-DOM text content")
		</code-block>
		<code-block>
			let div = document.createElement("div")
			let p = document.createElement("p")
			p.innerText = "Shadow-DOM text content"
			div.attachShadow({mode: "open"}).append(p)
			div.innerText = "Light-DOM text content"
			return div
		</code-block>
	</div>
</section>