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HTML5+原生javascript移动端滑动banner效果demo

2017-03-09 17:34 477 查看 
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta content="telephone=yes" name="format-detection" />
<meta name="apple-mobile-web-app-status-bar-style" content="white">
<meta name="x5-fullscreen" content="true">
<meta name="apple-touch-fullscreen" content="yes">
<title>Document</title>
<style>
*{margin:0;padding:0;}
.box{
height:200px;
width:100%;
overflow: hidden;
}
.movebox{
height:200px;
width:9000px;
padding:0;
position:relative;
left:0;
}
.movebox li{
height:200px;
float:left;
list-style:none;
font-size:30px;
color:#fff;
}

</style>
<script>
window.onload = function(){

var moveX,      //手指滑动距离
endX,       //手指停止滑动时X轴坐标
cout = 0,   //滑动计数器
moveDir;    //滑动方向
var movebox = document.querySelector(".movebox");   //滑动对象
var Li = movebox.querySelectorAll("li");    //滑动对象item
var width = parseInt(window.getComputedStyle(movebox.parentNode).width);    //滑动对象item的宽度

movebox.style.width = (width*4) + "px"; //设置滑动盒子width
for(var i = 0; i < Li.length; i++){
Li[i].style.width = width + "px";   //设置滑动item的width，适应屏幕宽度
}

//触摸开始
function boxTouchStart(e){
var touch = e.touches[0];   //获取触摸对象
startX = touch.pageX;   //获取触摸坐标
endX = parseInt(movebox.style.webkitTransform.replace("translateX(", ""));  //获取每次触摸时滑动对象X轴的偏移值
}

function boxTouchMove(e){
var touch = e.touches[0];
moveX = touch.pageX - startX;   //手指水平方向移动的距离

if(cout == 0 && moveX > 0){     //刚开始第一次向左滑动时
return false;
}

if(cout == 3 && moveX < 0){     //滑动到最后继续向右滑动时
return false;
}

movebox.style.webkitTransform = "translateX(" + (endX + moveX) + "px)"; //手指滑动时滑动对象随之滑动
}

function boxTouchEnd(e){
moveDir = moveX < 0 ? true : false;     //滑动方向大于0表示向左滑动，小于0表示向右滑动
//手指向左滑动
if(moveDir){

if(cout<3){
movebox.style.webkitTransform = "translateX(" + (endX-width) + "px)";
cout++;
}
//手指向右滑动
}else{
//滑动到初始状态时返回false
if(cout == 0){
return false;
}else{
movebox.style.webkitTransform = "translateX(" + (endX+width) + "px)";
cout--;
}
}
}

//滑动对象事件绑定
movebox.addEventListener("touchstart", boxTouchStart, false);
movebox.addEventListener("touchmove", boxTouchMove, false);
movebox.addEventListener("touchend", boxTouchEnd, false);
}
</script>
</head>

<body style="position:absolute;width:100%;overflow:hidden;">
<div class="box">
<ul class="movebox" style="transition-duration:0.2s;transform: translateX(-0px);">
<li style="background:red;">1</li>
<li style="background:yellow">2</li>
<li style="background:blue">3</li>
<li style="background:green">4</li>
</ul>
</div>
</body>

</html>
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