如何禁用/啟用頁面滾動

Question

我正在嘗試編寫一個禁用/啟用頁面滾動的JS代碼。 Chrome顯然存在問題-控制台顯示此錯誤

Unable to preventDefault inside passive event listener due to target being treated as passive.

這是我的JS代碼：

var keys = [32,33,34,35,36,37,38,39,40];

function preventDefault(e) {
  e = e || window.event;
  if (e.preventDefault)
      e.preventDefault();
  e.returnValue = false;  
}

function keydown(e) {
    for (var i = keys.length; i--;) {
        if (e.keyCode === keys[i]) {
            preventDefault(e);
            return;
        }
    }
}

function wheel(e) {
  preventDefault(e);
}

function disable_scroll() {
  if (window.addEventListener) {
      window.addEventListener('DOMMouseScroll', wheel, false);
  }
  window.onmousewheel = document.onmousewheel = wheel;
  document.onkeydown = keydown;
  disable_scroll_mobile();
}

function enable_scroll() {
    if (window.removeEventListener) {
        window.removeEventListener('DOMMouseScroll', wheel, false);
    }
    window.onmousewheel = document.onmousewheel = document.onkeydown = null;  
    enable_scroll_mobile();
}

// MOBILE
function disable_scroll_mobile(){
  document.addEventListener('touchmove',preventDefault, false);
}
function enable_scroll_mobile(){
  document.removeEventListener('touchmove',preventDefault, false);
}

我試圖使用此小技巧↓解決它。 我在eventListener添加了{ passive: false } ，但是這樣做沒有幫助：

function disable_scroll() {
      if (window.addEventListener) {
          window.addEventListener('DOMMouseScroll', wheel, { passive: false });
      }
      window.onmousewheel = document.onmousewheel = wheel;
      document.onkeydown = keydown;
      disable_scroll_mobile();
    }

    function enable_scroll() {
        if (window.removeEventListener) {
            window.removeEventListener('DOMMouseScroll', wheel, { passive: false });
        }
        window.onmousewheel = document.onmousewheel = document.onkeydown = null;  
        enable_scroll_mobile();
    }

用於測試目的的代碼筆位於https://codepen.io/wesleypimentel/full/KpgXJW

Answer 1

在滾動上，您可以為身體提供樣式

body {
  overflow-y: hidden;
  }

或簡單的js

document.body.style.overflow = 'hidden';

在函數調用