Build and update DOM with JUI's DomBuilder. Use this skill whenever rendering or re-rendering DOM in a JUI component, control or fragment: building element trees with Div/Span/H3/A/Button etc. under Wrap.$(el), extracting elements with .by()/.use(), wiring events with .onclick()/.on(), inserting child components, and — critically — updating part of the DOM at runtime. Triggers include: DomBuilder, Wrap, Wrap.buildInto, buildInto, rerender, re-render, refresh part of the DOM, update the DOM, ElementBuilder, INodeProvider, StateComponent, StateVariable, 'my onclick stopped firing after re-render', 'event handler not wired up', 'how do I redraw a section'.