大家都知道jQuery里没有touch事件,所以在移动端使用原生js实现上拉加载效果还是很不错的,闲话不多说,代码如下:

 1 //获取要操作的元素
 2 var objSection = document.getElementsByTagName("div")[0];
 3 //给元素绑定监听事件  个人习惯把监听事件写在一块
 4 objSection.addEventListener("touchstart", touchStart, false);
 5 objSection.addEventListener("touchmove", touchMove, false);
 6 objSection.addEventListener("touchend", touchEnd, false);
 7 
 8 //touchStart 触发事件时要执行的方法
 9 function touchStart(event) {
10     event.preventDefault();
11     this.startY = event.changedTouches[0].pageY;
12 }
13 
14 //touchMove 触发事件的过程执行的方法
15 function touchMove(event) {
16     var change = event.changedTouches[0].pageY - this.startY;
17     this.change = change;
18     this.parentNode.style["-webkit-transform"] = "translate(0," + this.change + "px)";
19     this.parentNode.style["transform"] = "translate(0," + this.change + "px)";
20     this.parentNode.style["-webkit-transition"] = "all " + 0 + "s";
21     this.parentNode.style["transition"] = "all " + 0 + "s";
22 }
23 
24 //touchEnd 事件结束执行的方法
25 function touchEnd(event) {
26     if (this.change < 0) {
27         this.parentNode.style["-webkit-transform"] = "translate(0," + this.change + "px)";
28         this.parentNode.style["transform"] = "translate(0," + this.change + "px)";
29         this.parentNode.style["-webkit-transition"] = "all " + 1 + "s";
30         this.parentNode.style["transition"] = "all " + 1 + "s";
31         appendData(this);
32     } else {
33         this.parentNode.style["-webkit-transform"] = "translate(0," + 0 + "px)";
34         this.parentNode.style["transform"] = "translate(0," + 0 + "px)";
35         this.parentNode.style["-webkit-transition"] = "all " + 0.5 + "s";
36         this.parentNode.style["transition"] = "all " + 0.5 + "s";
37     }
38 }
上拉加载更多需要注意的地方:在触发上拉这个动作时记录下当前页的pageY,在动作结束时记录下在页面中的pageY,结束时的pageY-开始时的pageY得到变化的pageY,在做css3动画时需要用到变化的pageY,touchEnd里面的appendData方法为ajax请求数据的方法,在这里不在赘述
简单的实现了基本功能,需要的话可以在这个基础上实现更多功能
欢迎大家批评指正~~

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本文链接:https://www.cnblogs.com/pearlsong/p/5422300.html