区域滚动到顶部底部阻止滚动 - davy-gan/web GitHub Wiki

$.fn.scrollUnique = function () {
    return $(this).each(function () {
        var eventType = 'mousewheel';
        // 火狐是DOMMouseScroll事件
        if (document.mozHidden !== undefined) {
            eventType = 'DOMMouseScroll';
        }
        $(this).on(eventType, function (event) {
            // 一些数据
            var scrollTop = this.scrollTop,
                scrollHeight = this.scrollHeight,
                height = this.clientHeight;

            var delta = (event.originalEvent.wheelDelta) ? event.originalEvent.wheelDelta : -(event.originalEvent.detail || 0);

            if ((delta > 0 && scrollTop <= delta) || (delta < 0 && scrollHeight - height - scrollTop <= -1 * delta)) {
                // IE浏览器下滚动会跨越边界直接影响父级滚动,因此,临界时候手动边界滚动定位
                this.scrollTop = delta > 0 ? 0 : scrollHeight;
                // 向上滚 || 向下滚
                event.preventDefault();
            }
        });
    });
};

$('.chat-content').scrollUnique();

watch: {
   	 FormVisible() {
      let mo = function(e) {
        e.preventDefault()
      }
      if (!this.FormVisible) {
        document.body.style.overflow = '' 
        document.removeEventListener('touchmove', mo, false)
      }
      if (this.FormVisible) {
        document.body.style.overflow = 'hidden'
        document.addEventListener('touchmove', mo, false)
      }
     }
    }
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版权声明:本文为CSDN博主「star星辉」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/qq_43227958/java/article/details/90484887