JS实现移动端整屏滑动的实例代码
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2022-06-17 13:27:39
基本思路:
1)检测手指滑动方向:获取手指抬起时的位置,减去手指按下时的位置,得正即为向下滑动了
2)手指抬起后,向对应反向操作改变当前页的位置
具体代码如下:
h...
基本思路:
1)检测手指滑动方向:获取手指抬起时的位置,减去手指按下时的位置,得正即为向下滑动了
2)手指抬起后,向对应反向操作改变当前页的位置
具体代码如下:
html
<div id="wrap"> <div id="page01" class="pages">第一屏</div> <div id="page02" class="pages">第二屏</div> <div id="page03" class="pages">第三屏</div> <div id="page04" class="pages">第四屏</div> </div> <div id="dots"> <span class="now"></span><span class=""></span><span class=""></span><span class=""></span> </div>
css
*{ margin:0; padding:0; } body{ overflow: hidden; } #wrap > div{ width: 10rem; position: absolute; left: 0; top: 0; background: #fff; transition: all 0.3s ease; } #dots{ position: fixed; right: 5px; top: 40%; z-index: 9; } #dots span{ display: block; height: 0.2rem; width: 0.2rem; border: 1px solid #000; border-radius: 50%; margin-bottom: 3px; } #dots .now{ background: #555; }
js分为两块
第一,设置html标签的font-size,以便设置rem的基数 (放在页面头部)
document.getelementsbytagname("html")[0].style.fontsize = window.innerwidth/10 + "px";
第二,具体的滑动操作代码
window.onload = function(){ var odiv = document.getelementbyid("wrap"); var apages = odiv.getelementsbyclassname("pages"); var adots = document.getelementbyid("dots").getelementsbytagname("span"); var winh = window.innerheight; var ttime = 1; //设置每页的高度和zindex值 for(var i=0; i<apages.length; i++){ apages[i].style.height = winh + "px"; apages[i].style.zindex = 1; } apages[0].style.zindex = 3; apages[1].style.zindex = 2; odiv.style.height = winh + "px"; //手指拖动事件(去除默认动作) document.addeventlistener("touchmove",function(e){ e.preventdefault(); }); var ystart = 0; var inow = 0; //手指按下 odiv.addeventlistener("touchstart",function(e){ ystart = e.changedtouches[0].clienty; }); //手指移动 odiv.addeventlistener("touchmove",function(e){ disy = e.changedtouches[0].clienty-ystart; //向下滑正,向上滑负 }); //手指离开 odiv.addeventlistener("touchend",function(e){ disy = e.changedtouches[0].clienty-ystart; //向下滑正,向上滑负 if(math.abs(disy)>winh/20){ //只有当滑动距离大于了一定值得时候,才执行切换 if(disy<0){ inow++; if(inow>=adots.length){ inow = 0; } apages[0].style.transform = "translatey("+ -winh +"px)"; doslide(); }else{ inow--; if(inow<0){ inow = adots.length-1; } apages[0].style.transform = "translatey("+ winh +"px)"; doslide("up"); } } }); function doslide(upflag){ for(var i=0;i<adots.length;i++){ adots[i].classname = ""; } adots[inow].classname = "now"; if(upflag){ //向上滑 apages[3].style.zindex = 2; apages[1].style.zindex = 1; odiv.insertbefore(apages[3],apages[1]); settimeout(function(){ apages[1].style.transform = "translatey(0px)"; apages[1].style.zindex = 2; apages[0].style.zindex = 3; },300) }else{ settimeout(function(){ apages[0].style.transform = "translatey(0px)"; apages[0].style.zindex = 1; apages[1].style.zindex = 3; apages[2].style.zindex = 2; odiv.appendchild(apages[0]); },300) } } }
好了,在给大家分享一段简单的代码,js实现移动端整页滑屏示,具体代码如下所示:
<!doctype html> <html> <head> <meta charset="utf-8"/> <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=0" /> <meta name="format-detection" content="telephone=no" /> <meta content="yes" name="mobile-web-app-capable"> <meta content="yes" name="apple-mobile-web-app-capable" /> <meta http-equiv="cache-control" content="no-siteapp" /> <title>移动端整页滑屏示例</title> <style type="text/css"> * { padding: 0; margin: 0; font-family: verdana; } body, html { height: 100%; background-color: #000000; } .wrap { width: 100%; height: 100%; overflow: hidden; } .wrap2 { width: 100%; height: 1000%; transition: 0.3s linear } .page { width: 100%; height: 10% } .page { background-color: #fdfdfd; font-size: 100px; line-height: 400px; text-align: center; font-weight: bold; } </style> </head> <body> <div class="wrap" id="wrap"> <div class="wrap2" id="wrap2"> <div class="page">1</div> <div class="page" style="background-color:#dddddd;">2</div> <div class="page">3</div> <div class="page" style="background-color:#dddddd;">4</div> <div class="page">5</div> <div class="page" style="background-color:#dddddd;">6</div> </div> </div> <script type="text/javascript"> //重要!禁止移动端滑动的默认事件 document.body.addeventlistener('touchmove', function(event) { event = event ? event : window.event; if(event.preventdefault) { event.preventdefault() } else { event.returnvalue = false } }, false) var pages = function(obj) { var box = document.getelementbyid(obj.wrap); var box2 = document.getelementbyid(obj.wrap2); var len = obj.len; var n = obj.n; var starty, movey, clih; //获取屏幕高度 var geth = function() { clih = document.body.clientheight }; geth(); window.addeventlistener('resize', geth, false); //touchstart var touchstart = function(event) { if(!event.touches.length) { return; } starty = event.touches[0].pagey; movey = 0; }; //touchmove var touchmove = function(event) { if(!event.touches.length) { return; } movey = event.touches[0].pagey - starty; box2.style.transform = 'translatey(' + (-n * clih + movey) + 'px)'; //根据手指的位置移动页面 }; //touchend var touchend = function(event) { //位移小于+-50的不翻页 if(movey < -50) n++; if(movey > 50) n--; //最后&最前页控制 if(n < 0) n = 0; if(n > len - 1) n = len - 1; //重定位 box2.style.transform = 'translatey(' + (-n * 10) + '%)'; //根据百分比位置移动页面 console.log(n) }; //touch事件绑定 box.addeventlistener("touchstart", function(event) { touchstart(event) }, false); box.addeventlistener("touchmove", function(event) { touchmove(event) }, false); box.addeventlistener("touchend", function(event) { touchend(event) }, false); }; pages({ wrap: 'wrap', //.wrap的id wrap2: 'wrap2', //.wrap2的id len: 6, //一共有几页 n: 0 //页面一打开默认在第几页?第一页就是0,第二页就是1 }); </script> </body> </html>
总结
以上所述是小编给大家介绍的js实现移动端整屏滑动的实例代码,希望对大家有所帮助