javascript - How to monitor the sliding of the mobile phone screen and the distance from the top of the sliding screen?

Question

How to monitor the sliding of the mobile phone screen and calculate the scroll distance from the top? {Code...} What I write like this is always 0? Monitoring scroll has no effect! Ask God

某草草 · Answer

$(window).scroll(function () {
  // 你的代码
});

習慣沉默 · Answer

$('body').on("touchstart",function(ev){
        var  winHeight = $(window).scrollTop();
        $('body').on("touchmove",function(ev){
            console.log(winHeight);
        })
    });

Try writing it like this

仅有的幸福 · Answer

window.addEventListener('scroll',function(){
  console.log(window.scrollY)
})

大家讲道理 · Answer

  let oB = document.getElementById('objEl')
  let oBh = oB.offsetTop
  oB.addEventListener('touchstart', function (e) {
    startX = e.touches[0].pageX
    startY = e.touches[0].pageY
  })
  oB.addEventListener('touchmove', function (e) {
    let endX = e.changedTouches[0].pageX
    let endY = e.changedTouches[0].pageY 
  }, false)
  oB.addEventListener('touchend', function () {
    // ...
  })