/**
*
* @param {*} scrollClass
* @param {*} fn
* @param {*} preventLoad
* 滚动的元素
* 滚动回调方法
* 锁死滚动的方法
*/
var initScroll = function(scrollClass,fn){
var self = this;console.log(123)
var beforeScrollTop = document.body.scrollTop || document.documentElement.scrollTop;
document.getElementById(scrollClass).addEventListener(‘scroll‘, function(e){
var afterScrollTop = this.scrollTop || this.scrollTop,
windowHeight = window.innerHeight,
scrollHeight = this.scrollHeight,
delta = afterScrollTop - beforeScrollTop;
if( (afterScrollTop + windowHeight)/scrollHeight>=0.95 ){
(typeof fn==‘function‘) && fn();
}
//将新的滑动距离赋值给上一次的滑动
beforeScrollTop = afterScrollTop;
})
}
