Element: releasePointerCapture() メソッド

releasePointerCapture(pointerId)

<div id="slider">スライドしてね</div>

div {
  width: 140px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fbe;
}

function beginSliding(e) {
  slider.onpointermove = slide;
  slider.setPointerCapture(e.pointerId);
}
function stopSliding(e) {
  slider.onpointermove = null;
  slider.releasePointerCapture(e.pointerId);
}
function slide(e) {
  slider.style.transform = `translate(${e.clientX - 70}px)`;
}
const slider = document.getElementById("slider");
slider.onpointerdown = beginSliding;
slider.onpointerup = stopSliding;