how to make custom context menu in html code example

Example: html context menu

oncontextmenu = (e) => {
  e.preventDefault()
  let menu = document.createElement("div")
  menu.id = "ctxmenu"
  menu.style = `top:${e.pageY-5}px;left:${e.pageX-5}px`
  menu.onmouseleave = () => ctxmenu.outerHTML = ''
  menu.innerHTML = "<p>Option1</p><p>Option2</p><p>Option3</p><p>Option4</p><p onclick='alert(`Thank you!`)'>Upvote</p>"
  document.body.appendChild(menu)
}