写一个让一句话随着鼠标移动的小插件

function mousemoveWithText(text, options) {  options = options || {};  const $el = text instanceof HTMLElement ? text : createElement();  const pos = { x: -9999, y: - 9999 };  // TODO: 移动后才第一次能显示，有点糟糕  window.onmousemove = handleMove;  setTextPosition();  (function loop() {    setTextPosition();    // TODO: 如果需要销毁，需要存变量    requestAnimationframe(loop);  })();  function createElement() {    const $el = document.createElement('div');    $el.innerText = text;    $el.style.position = 'fixed';    $el.style.pointerEvents = 'none';    document.body.appendChild($el);    return $el;  }  function handleMove(e) {    pos.x = e.clientX;    pos.y = e.clientY;    // TODO: 超出屏幕应隐藏，不然会造成比如 scroller-x 超出  }  function setTextPosition() {    const { x, y } = pos;    $el.style.left = x + 10 + 'px';    $el.style.top = y - 10 + 'px';  }}mousemoveWithText('xxxx');