create elements in a snabbdom-like way, without any virtual thingie. small and opinionated.

EL.js

function EL(_nodeName, _attrs, _children) {
    let attrs = {}, children = [];
    const argLen = arguments.length;
    if (argLen === 1) { return document.createTextNode(_nodeName); }
    else if (argLen === 2) {
      if (_attrs instanceof Array) { children = _attrs; }
      else if (_attrs instanceof Object) { attrs = _attrs; }
      else { throw new Error('2nd arg must be either an object (attrs) or an array (children)!'); }
    }
    else if (argLen === 3) { attrs = _attrs; children = _children; }
    else { throw new Error('Wrong number of params!'); }
    const classes = (_nodeName.indexOf('.') === -1) ? [_nodeName] : _nodeName.split('.');
    const nodeName = classes.shift();
    const el = document.createElement(nodeName);
    classes.forEach(cl => el.classList.add(cl));
    Object.keys(attrs).forEach(at => {
      if (at.substring(0, 2) === 'on') {
        el.addEventListener(at.substring(2), attrs[at]);
      } else {
        el.setAttribute(at, attrs[at]);
      }
    });
    children.forEach(chEl => el.appendChild(typeof chEl === 'string' ? EL(chEl) : chEl));
    return el;
  }

Example usage:
https://github.com/JosePedroDias/pixelscamp-eth/blob/master/render.js#L199