下拉刷新

let _self = this; window.addEventListener('scroll', () => { handler.winScroll(function () { if (_self.state.hasData) { _self.requestDoctorListApi(); } }); });

export const handler = { winScroll: function (callback) { let scrollTop, scrollHeight, clientHeight; scrollTop = this.getScrollTop(); scrollHeight = this.getScrollHeight(); clientHeight = this.getClientHeight();

if(scrollTop + clientHeight >= scrollHeight-15){
        callback && callback();               
    }  
},
getScrollTop: function(){
　　let scrollTop = 0, bodyScrollTop = 0, documentScrollTop = 0;
　　if(document.body){
　　　　bodyScrollTop = document.body.scrollTop;
　　}
　　if(document.documentElement){
　　　　documentScrollTop = document.documentElement.scrollTop;
　　}
　　scrollTop = (bodyScrollTop - documentScrollTop > 0) ? bodyScrollTop : documentScrollTop;
　　return scrollTop;
},
    
//文檔的總高度     
getScrollHeight: function(){
　　let scrollHeight = 0, bodyScrollHeight = 0, documentScrollHeight = 0;
　　if(document.body){
　　　　bodyScrollHeight = document.body.scrollHeight;
　　}
　　if(document.documentElement){
　　　　documentScrollHeight = document.documentElement.scrollHeight;
　　}
　　scrollHeight = (bodyScrollHeight - documentScrollHeight > 0) ? bodyScrollHeight : documentScrollHeight;
　　return scrollHeight;
},
    
//瀏覽器視口的高度     
getClientHeight: function(){
　　let clientHeight = 0;
　　if(document.compatMode == "CSS1Compat"){
        clientHeight = document.documentElement.clientHeight;
　　}else{
        clientHeight = document.body.clientHeight;
　　}
　　return clientHeight;
}

}