Use node.append(child) instead of node.appendChild(child)

[skanne]

Hi Jorge,

similar to PR 1036 I suggest replacing node.appendChild(child) with node.append(child). Difference explained here: https://dev.to/ibn_abubakre/append-vs-appendchild-a4m.

Benefit: 5 characters/bytes of code less.

Regards,
Sven

[jorgebucaran]

Since append() accepts plain DOMStrings, I wonder if it's possible to take advantage of it around here:

hyperapp/index.js

Lines 131 to 136 in 9df1aca

	} else if (
	oldVNode != null &&
	oldVNode.type === TEXT_NODE &&
	newVNode.type === TEXT_NODE
	) {
	if (oldVNode.tag !== newVNode.tag) node.nodeValue = newVNode.tag

[skanne]

Possibly. I'll spend some time on this and find out. I do see some potential around

hyperapp/index.js

Lines 105 to 110 in 9df1aca

	var node =
	vdom.type === TEXT_NODE
	? document.createTextNode(vdom.tag)
	: (isSvg = isSvg || vdom.tag === "svg")
	? document.createElementNS(SVG_NS, vdom.tag, { is: props.is })
	: document.createElement(vdom.tag, { is: props.is })

and

hyperapp/index.js

Lines 117 to 123 in 9df1aca

	node.appendChild(
	createNode(
	(vdom.children[i] = maybeVNode(vdom.children[i])),
	listener,
	isSvg
	)
	)

But I need to wrap my head around it. High noon for me to try to understand all inner workings of Hyperapp's core. (Code comments would help, but are non-existent. Are you planning on documenting the core?)

[jorgebucaran]

High noon for me to try to understand all inner workings of Hyperapp's core.

What do you need help with?

[skanne]

Well, I need to walk through the code and see what happens. Never bothered to fully understand the concept of patching.

[l-cornelius-dol]

It would seem to me that here, as with #1036 the more generic function is likely to be less performant. At the least, it must inspect argument types and branch, whereas the dedicated function for Nodes expects a Node.

[skanne]

The performance difference really is neglible IMO. See https://www.measurethat.net/Benchmarks/Show/9176/0/js-append-vs-appendchild

[sergey-shpak]

@skanne performance difference is about 12%, which is not critical for custom usage, but not for hyperapp(superfine)