JSFiddle - React, Tailwind, and code Playground

JavaScript

var noChildren = {
    input: true,
    meta: true,
    br: true,
    link: true,
    img: true
};

function canHaveChildren(tagName) {
    tagName = tagName.toLowerCase();
    alert(noChildren[tagName] === undefined);
}

canHaveChildren("BR");
canHaveChildren("div");