Posted in Javascript onJune 26, 2017
废话不多说，直接上代码
<!DOCTYPE html>
<html>
<head>
<title>滑动条</title>
<meta charset="utf-8">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" />
<script type="text/javascript" src="./hScoll.js"></script>
</head>
<style>
*{
margin: 0;
padding: 0;
}
#content{
margin-top: 50px;
width:100%;
height: 200px;
background: #eeeeee;
overflow: hidden;
position: relative;
/**transform: translate(0px, -70px);*/
}
#scoll{
overflow: hidden;
}
#content2{
margin-top: 50px;
width:100%;
height: 200px;
background: red;
overflow: hidden;
position: relative;
/**transform: translate(0px, -70px);*/
}
#scoll2{
overflow: hidden;
}
.scrollbars{
position: absolute;
height: 100%;
right: 0;
top: 0;
width: 5px;
border-radius: 5px;
}
.scollb{
position: absolute;
right: 0;
top: 0;
width: 100%;
background: #999999;
border-radius: 5px;
}
</style>
<body>
<div id="content">
<div id="scoll">
<p>1111</p>
<p>2222</p>
<p>3333</p>
<p>4444</p>
<p>5555</p>
<p>6666</p>
<p>7777</p>
<p>8888</p>
<p>9999</p>
<p>0000</p>
<p>aaaa</p>
<p>bbbb</p>
<p>cccc</p>
<p>dddd</p>
<p>eeee</p>
</div>
</div>
</body>
<script>
var options ={
interactiveScrollbars:true
}
window.hScoll.buildScoll('content',options);
</script>
</html>
js代码：
/**
* Created by hechao on 2017/6/25.
*/
(function(){
/**添加window对象hScoll属性*/
window.hScoll = {
buildScoll:function(el,options){
App.init(el,options);
}
}
var App = {
/**初始化组件*/
init:function(el,option){
App.options = option;
App.prevY = 0;
App.el = document.getElementById(el);
App.scoll = this.el.children[0];
App.h = this.el.offsetHeight;//滑动范围高度
App.ch = this.el.scrollHeight;//内容的高度
if(parseFloat(this.h)<=parseFloat(this.ch)){
App.sdiv = document.createElement('div');
App.scollb = document.createElement('div');
App.sdiv.setAttribute('class','scrollbars');
App.scollb.setAttribute('class','scollb');
App.scollb.style.height = parseFloat(this.h)*parseFloat(this.h)/parseFloat(this.ch) + 'px';
App.el.appendChild(this.sdiv);
App.sdiv.appendChild(this.scollb);
App.initevent();
}
},
/**绑定事件*/
initevent:function (){
App.el.addEventListener('touchstart', App.touchstart, false);
App.el.addEventListener('touchmove', App.touchmove, false);
App.el.addEventListener('touchend', App.touchend, false);
},
/**记录滑动初始位置*/
touchstart:function(e){
var point = App.getPoint(e);
App.startY = point.pageY;
},
/**手指移动时，滚动条滚动*/
touchmove:function(e){
e.preventDefault();//阻止默认行为
var point = App.getPoint(e);
App.moveY = point.pageY;
App.deltaY = App.startY - App.moveY;
if((App.prevY - App.deltaY)<=0 && (App.prevY - App.deltaY)>= -(App.ch-App.h)){
App.domove(App.prevY - App.deltaY);
}
if(App.options.interactiveScrollbars){
App.domove2(App.prevY - App.deltaY);
}else{
if((App.prevY - App.deltaY)<=0 && (App.prevY - App.deltaY)>= -(App.ch-App.h)){
App.domove2(App.prevY - App.deltaY);
}
}
},
/**手指离开时，判断位置*/
touchend:function(e){
App.prevY = App.prevY - App.deltaY;
if(App.prevY >= 0){
App.prevY = 0;
App.domove(App.prevY,true);
App.domove2(App.prevY,true);
}
if(App.prevY <= -(App.ch-App.h)){
App.prevY = -(App.ch-App.h);
App.domove(App.prevY,true);
App.domove2(App.prevY,true);
}
},
getPoint:function (e) {
return e.touches ? e.touches[0] : e;
},
/**内容滑动*/
domove:function (y,t){
if(t){
App.scoll.setAttribute('style', 'transform: translate(0px, '+y+'px);transition:transform 300ms ease');
}else{
App.scoll.setAttribute('style', 'transform: translate(0px, '+y+'px);transition:transform 0ms ease');
}
},
/**滚动条滑动*/
domove2:function(y,t){
if(t){
App.scollb.setAttribute('style', 'transform: translate(0px, '+-parseFloat(y)*parseFloat(App.h)/parseFloat(App.ch)+'px);transition:transform 0ms ease;height:'+parseFloat(App.h)*parseFloat(App.h)/parseFloat(App.ch) + 'px'+'');
}else{
App.scollb.setAttribute('style', 'transform: translate(0px, '+-parseFloat(y)*parseFloat(App.h)/parseFloat(App.ch)+'px);transition:transform 0ms ease;height:'+parseFloat(App.h)*parseFloat(App.h)/parseFloat(App.ch) + 'px'+'');
}
}
}
})();
以上这篇js 简易版滚动条实例(适用于移动端H5开发)就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持三水点靠木。
js 简易版滚动条实例(适用于移动端H5开发)
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