.append()

void ParentNode.append((Node or String)... nodes)

Tags:

Warning! Current browsers do not yet support .append(), please use a polyfill until they do.

Append one or more nodes to the end of a node’s child list.

node.append(nodes);

Inserts nodes after the last child of node, while replacing strings in nodes with equivalent text nodes.

HTML:

<p>
    All
    <strong>large</strong>
    goats
    <em>are</em>
    delicious!
</p>

JavaScript:

let el = document.createElement("strong");
el.textContent = "Eat";
document.query("p").append(el, " them quickly.");

Resulting HTML:

<p>
    All
    <strong>large</strong>
    goats
    <em>are</em>
    delicious!
    <strong>Eat</strong>
    them quickly.
</p>