leporello-js/docs/examples/domevents.js

window.addEventListener("load", () => {
  const text = document.createElement("input")

  const checkbox = document.createElement("input")
  checkbox.setAttribute("type", "checkbox")

  const radio = document.createElement("input")
  radio.setAttribute("type", "radio")

  const range = document.createElement("input")
  range.setAttribute("type", "range")

  const select = document.createElement("select")
  Array.from({ length: 5 }, (_, i) => i).forEach(i => {
    const option = document.createElement("option")
    option.setAttribute("value", i)
    option.innerText = i
    select.appendChild(option)
  })

  const div = document.createElement("div")

  const elements = { text, checkbox, range, select, radio, div }

  Object.entries(elements).forEach(([name, el]) => {
    document.body.appendChild(el)
    ;["click", "input", "change"].forEach(type => {
      el.addEventListener(type, e => {
        const row = document.createElement("div")
        div.appendChild(row)
        row.innerText = [
          name,
          type,
          e.target.value,
          e.target.checked,
          e.target.selectedIndex,
        ].join(", ")
      })
    })
  })
})