Pensuisan gelongsor imej telefon mudah alih Terdapat banyak contoh sedemikian di Internet, tetapi semuanya bergantung pada komponen lain, yang menjadikan kod itu mengelirukan. Terdapat juga penggunaan transformasi dalam CSS3: terjemah (x, y); untuk memindahkan elemen, tetapi saya mendapati bahawa Ia segera berakhir pada peranti yang tidak menyokong CSS3 Saya memutuskan untuk membuatnya sendiri, tetapi banyak masalah timbul halaman web tidak boleh menatal semasa menyeret gambar , dan tidak serasi dengan menyeret pada mesin PC di sini saya akan memperkenalkan secara ringkas masalah yang dihadapi dan penyelesaiannya;
Masalah 1: Selepas menambah pautan pada imej, ia sentiasa melompat ke halaman lain apabila menyeretSumber utama masalah ialah ia tidak boleh dinilai sama ada ia adalah klik atau seret Urutan umum acara telefon mudah alih ialah touchstart-》mousedown-》mousemove-》touchmove-》mouseup-》touchend-》click, yang mungkin berbeza bergantung pada telefon mudah alih yang berbeza. Acara pada telefon mudah alih skrin sentuh biasanya menggunakan touchstart -> touchmove -> touchend -> click Acara klik dilaksanakan terakhir Apabila kita mempunyai touchstart, touchmove dan touchend diproses, jika kita tidak mengembalikan atau membatalkan lalai, acara klik. akan dicetuskan , jadi halaman web melompat pergi parameter Acara bagi skrin sentuh secara amnya ialah sentuhan peristiwa. Semasa ujian, saya mendapati bahawa nilai ketiga-tiga parameter adalah sama, bagaimanapun, perlu diperhatikan bahawa acara hujung sentuh tidak akan mendapat koordinat titik sentuh (ia mungkin masalah peranti akan terus bermula). apabila bergerak. Kadangkala touchmove tidak akan Mencetuskan, yang bermaksud bahawa penyemak imbas mempunyai fungsi terbina dalam untuk menanggalkan titik sentuh (atau tetikus) daripada elemen yang dipilih Contohnya, jika anda menekan dan menahan untuk masa yang lama, menu akan muncul (gambar pada PC akan menghasilkan lakaran kecil yang boleh diseret), supaya Untuk membatalkan lalai, event.preventDefault();
Masalah 2: Bar skrol ke atas dan ke bawah pada halaman web tidak boleh menatal apabila menyeret imej
Saya percaya bahawa masalah ini akan dihadapi selagi anda berjaya mengatasinya, ini adalah terutamanya kerana acara lalai.preventDefault() dibatalkan apabila bergerak (touchmove, mousemove). sama ada untuk bergerak untuk mendapatkan titik sentuh dan Sama ada titik hubungan permulaan adalah konsisten, jika ia konsisten, kembali terus, dan juga mengira sama ada paksi-x bergerak lebih banyak atau paksi-y bergerak lebih banyak, supaya kita boleh membatalkan lalai apabila meluncur ke kiri dan ke kanan, dan tidak membatalkan ketika pergi ke sekolah;
Masalah 3: Dan ia tidak serasi dengan menyeret pada mesin PC
Ini kerana semasa mengikat acara, anda tidak boleh mempertimbangkan sepenuhnya sama ada nama acara itu mula sentuh atau turun tetikus saya mencarinya di Internet dan merasakan ia tidak selesai, jadi saya menyalinnya terus
this.eventName={ touchstart:'touchstart', touchmove:'touchmove', touchend:'touchend', }
if(!device){ this.eventName.touchstart='mousedown'; this.eventName.touchmove='mousemove'; this.eventName.touchend='mouseup'; }
Malah, saya menghadapi banyak masalah, jadi saya tidak akan menerangkannya satu persatu
Tiada kata-kata lagi, baru post kod kalau ada yang tak bagus, sila sertakan dan komen
<!doctype html> <html> <head> <meta charset="utf-8"> <meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" name="viewport" /> <meta content="yes" name="apple-mobile-web-app-capable" /> <meta content="black" name="apple-mobile-web-app-status-bar-style" /> <meta content="telephone=no" name="format-detection" /> <title></title> <style type="text/css"> html,body,*{ margin: 0; padding: 0; border: 0;} #wapListImage1, #wapListImage{width: 100%; overflow: hidden; height: auto; cursor: move; zoom:1; position: relative;} #wapListImage1 ul, #wapListImage1 ul li, #wapListImage1 ul, #wapListImage ul li{ list-style: none;} #wapListImage1 ul, #wapListImage ul{width: 99999px;} #wapListImage1 ul li, #wapListImage ul li{ float: left;} #wapListImage ul li a img:focus, #wapListImage ul li a img:checked, #wapListImage ul li a img, #wapListImage ul li a img:active, #wapListImage ul li a,#wapListImage ul li a:active{cursor: move;} #wapListImage dl{ position: absolute; bottom: 10px; 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}else if(lib.point.pageX2-lib.point.pageX1>0){ // console.log("===") lib.Event.prev.call(this,lib); } }, domUpdate: function(lib,type){ if(lib.page.isdom) return; lib.page.isdom=true; if(!lib.options.isfor){ var index = lib.page.liList[lib.page.index].getAttribute('index'); lib.options.callBack({"index":parseInt(index)+1}); lib.page.isdom=false; return; } if(type=='l'){ lib.page.domUL.insertBefore(lib.page.liList[lib.page.liList.length-1],lib.page.liList[0]); lib.page.domUL.style.marginLeft=-lib.page.bodyWidth+'px';//(parseFloat(lib.page.domUL.style.marginLeft)-lib.page.bodyWidth)+'px'; //lib.page.index++; }else if(type=='r'){ lib.page.domUL.appendChild(lib.page.liList[0]); lib.page.domUL.style.marginLeft=-lib.page.bodyWidth+'px';//(parseFloat(lib.page.domUL.style.marginLeft)+lib.page.bodyWidth)+'px'; //lib.page.index--; } lib.page.index=1; // console.log(lib.page.index) var index = lib.page.liList[lib.page.index].getAttribute('index'); lib.options.callBack({"index":parseInt(index)+1}); lib.page.isdom=false; } }; }; WapImage.prototype = { setoption: function(arg){ for(var i in this.options){ this.options[i]= arg[i] !== undefined ? arg[i] : this.options[i]; } if(!device){ this.eventName.touchstart='mousedown'; this.eventName.touchmove='mousemove'; this.eventName.touchend='mouseup'; } //return temp; }, bindEvent: function(){ var lib = this; this.page.domUL.addEventListener(this.eventName.touchstart,function(event){lib.Event.handleEvent.call(lib,event,lib);},false); w.addEventListener(this.eventName.touchmove,function(event){lib.Event.handleEvent.call(lib,event,lib);},false); w.addEventListener(this.eventName.touchend,function(event){lib.Event.handleEvent.call(lib,event,lib);},false); w.addEventListener('resize',function(){lib.init();},false); }, init:function(){ this.page.bodyWidth=document.body.clientWidth; this.page.liList= this.options.dom.getElementsByTagName('li'); this.page.domUL = this.options.dom.getElementsByTagName('ul')[0]; this.options.dom.style.width=this.page.bodyWidth+'px'; for(var i=0;i<this.page.liList.length;i++){ var item = this.page.liList[i]; var img = item.getElementsByTagName('img')[0]; item.setAttribute('index',i); item.style.width=this.page.bodyWidth+'px'; img.style.width = this.page.bodyWidth+'px'; } if(this.page.liList.length<3){ var length = this.page.liList.length; if(length==1){ this.page.domUL.appendChild(this.page.liList[0].cloneNode(true)); this.page.domUL.appendChild(this.page.liList[0].cloneNode(true)); }else{ for(var i=0;i<length;i++){ this.page.domUL.appendChild(this.page.liList[i].cloneNode(true)); } } this.page.liList= this.options.dom.getElementsByTagName('li'); } }, position:function(index){ this.Event.position.call(this,this,index); }, next:function(){ this.Event.next.call(this,this); }, prev:function(){ this.Event.prev.call(this,this); }, start: function(arg){ this.setoption(arg); this.init(); this.position(); this.bindEvent(); this.Event.domUpdate(this,'l'); this.Event.start(this); } }; var loaded=function(){ w.WapImage=new WapImage(); w.WapImages=new WapImage(); }; (function(){ if(d.body){ loaded(); }else{ if(d.addEventListener){ d.addEventListener( 'DOMContentLoaded', function(){ d.removeEventListener( 'DOMContentLoaded', arguments.callee, false ); loaded(); }, false ); }else if(d.attachEvent){ d.attachEvent( 'onreadystatechange', function(){ if( d.readyState === 'complete' ){ d.detachEvent( 'onreadystatechange', arguments.callee ); loaded(); } }); } } })(); })(window,document,undefined); window.onload = function(){ var obj = { dom:document.getElementById('wapListImage'), isupdate:true, time:3000, isfor:true, leftOrright:'left', callBack:function(obj){ var span = document.getElementById('wapListImage').getElementsByTagName('dl')[0].getElementsByTagName('span'); for(var k = 0;k<span.length;k++){ span[k].className=''; } span[obj.index-1].className='selected' // console.log(obj.index) } }; WapImage.start(obj); WapImage.position(2) var obj2 = { dom:document.getElementById('wapListImage1'), callBack:function(obj){ // console.log(obj.index) } }; WapImages.start(obj2); // var img = new w.WapImage(); // img.start(obj); } </script> </body> </html>
Selepas halaman dimuatkan
var obj = { dom:document.getElementById('wapListImage'),//dom元素 isupdate:true,//是否自动切换 time:3000,//自动切换的时间毫秒 isfor:true, //是否循环播放,即到最后一张是否直接转入第一张,或到第一张直接转入最后一张 leftOrright:'left',//像左侧自动切换还是像右侧自动切换 callBack:function(obj){//切换成功后回调函数 其实有index参数为当前第几张图片 //自己处理 var span = document.getElementById('wapListImage').getElementsByTagName('dl')[0].getElementsByTagName('span'); for(var k = 0;k<span.length;k++){ span[k].className=''; } span[obj.index-1].className='selected' // console.log(obj.index) } }; WapImage.start(obj); WapImage.position(2)
Tentukan bilangan menukar gambar yang anda perlukan dan namakannya
sebagai
w.WapImage=wapImage baharu();
w.WapImages=wapImages baharu();
Anda boleh memanggilnya terus selepas halaman dimuatkan
WapImage.start() dan WapImages.start()