用于检测元素位置何时更改的jQuery事件

$(document).ready(function() {
  $(window).scroll(function() {
    console.log("滚动条位置已更改");
  });
});

$(document).ready(function() {
  var previousPosition = null;
  setInterval(function() {
    var currentPosition = $("#element").offset();
    if (previousPosition !== null && (currentPosition.top !== previousPosition.top || currentPosition.left !== previousPosition.left)) {
      console.log("元素位置已更改");
    }
    previousPosition = currentPosition;
  }, 100);
});