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移動端H5開發 Turn.js實現很棒的翻書效果
編輯:關於JavaScript     

最近CTO給我分配了一個移動端H5開發的任務,主要功能是需要實現翻書效果,我聽過主要需求後,當時是呀!!!接下來自己嘗試使用 fullPage.js和Swiper來實現翻書效果,結果效果都不是非常的理想,後來想起自己曾經做過PC版的翻書效果,當時使用的是Turn.js ,查過其相關API後,整個人突然豁然開朗呀,使用Turn.js 完全可以解決當前我接手這個項目的所有需求呀。現在將個人的學習總結如下,若有不正確的地方,歡迎讀者給與批評指正!
Turn.js的官方網址: http://www.turnjs.com/
下面是我這個項目上線後的效果: 

 看過實際項目後,各位看官是不是已經迫不及待的想知道這個項目是如何實現,看官莫急,接下來我就詳細的介紹下我的開發過程:
1、需要引入的腳本文件     

<link rel="stylesheet" type="text/css" href="css/basic.css"/>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/modernizr.2.5.3.min.js"></script>
<script type="text/javascript" src="js/main.js"></script> 

2、html部分代碼

<!DOCTYPE html>
<html>
<head>
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
 <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"/>
 <meta name="format-detection" content="telephone=no">
 <meta name="apple-mobile-web-app-capable" content="yes"/>
 <meta name="apple-mobile-web-app-status-bar-style" content="black"/>
 <title>Turn.js 實現翻書效果</title>
 <link rel="stylesheet" type="text/css" href="css/basic.css"/>
 <script type="text/javascript" src="js/jquery.js"></script>
 <script type="text/javascript" src="js/modernizr.2.5.3.min.js"></script>
 <script type="text/javascript" src="js/main.js"></script>
</head>
<body>
<div class="shade">
 <div class="sk-fading-circle">
 <div class="sk-circle1 sk-circle"></div>
 <div class="sk-circle2 sk-circle"></div>
 <div class="sk-circle3 sk-circle"></div>
 <div class="sk-circle4 sk-circle"></div>
 <div class="sk-circle5 sk-circle"></div>
 <div class="sk-circle6 sk-circle"></div>
 <div class="sk-circle7 sk-circle"></div>
 <div class="sk-circle8 sk-circle"></div>
 <div class="sk-circle9 sk-circle"></div>
 <div class="sk-circle10 sk-circle"></div>
 <div class="sk-circle11 sk-circle"></div>
 <div class="sk-circle12 sk-circle"></div>
 </div>
 <div class="number"></div>
</div>
<div class="flipbook-viewport" style="display:none;">
 <div class="previousPage"></div>
 <div class="nextPage"></div>
 <div class="return"></div>
 <img class="btnImg" src="./image/btn.gif" style="display: none"/>
 <div class="container">
 <div class="flipbook">
 </div>
 </div>
</div>
<script>
 //自定義仿iphone彈出層
 (function ($) {
 //ios confirm box
 jQuery.fn.confirm = function (title, option, okCall, cancelCall) {
  var defaults = {
  title: null, //what text
  cancelText: '取消', //the cancel btn text
  okText: '確定' //the ok btn text
  };

  if (undefined === option) {
  option = {};
  }
  if ('function' != typeof okCall) {
  okCall = $.noop;
  }
  if ('function' != typeof cancelCall) {
  cancelCall = $.noop;
  }

  var o = $.extend(defaults, option, {title: title, okCall: okCall, cancelCall: cancelCall});

  var $dom = $(this);

  var dom = $('<div class="g-plugin-confirm">');
  var dom1 = $('<div>').appendTo(dom);
  var dom_content = $('<div>').html(o.title).appendTo(dom1);
  var dom_btn = $('<div>').appendTo(dom1);
  var btn_cancel = $('<a href="#"></a>').html(o.cancelText).appendTo(dom_btn);
  var btn_ok = $('<a href="#"></a>').html(o.okText).appendTo(dom_btn);
  btn_cancel.on('click', function (e) {
  o.cancelCall();
  dom.remove();
  e.preventDefault();
  });
  btn_ok.on('click', function (e) {
  o.okCall();
  dom.remove();
  e.preventDefault();
  });

  dom.appendTo($('body'));
  return $dom;
 };
 })(jQuery);

 //上一頁
 $(".previousPage").bind("touchend", function () {
 var pageCount = $(".flipbook").turn("pages");//總頁數
 var currentPage = $(".flipbook").turn("page");//當前頁
 if (currentPage >= 2) {
  $(".flipbook").turn('page', currentPage - 1);
 } else {
 }
 });
 // 下一頁
 $(".nextPage").bind("touchend", function () {
 var pageCount = $(".flipbook").turn("pages");//總頁數
 var currentPage = $(".flipbook").turn("page");//當前頁
 if (currentPage <= pageCount) {
  $(".flipbook").turn('page', currentPage + 1);
 } else {
 }
 });
 //返回到目錄頁
 $(".return").bind("touchend", function () {
 $(document).confirm('您確定要返回首頁嗎?', {}, function () {
  $(".flipbook").turn('page', 1); //跳轉頁數
 }, function () {
 });
 });
</script>
</body>
</html>

3、主要js實現部分

/**
 * Created by ChengYa on 2016/6/18.
 */

//判斷手機類型
window.onload = function () {
 //alert($(window).height());
 var u = navigator.userAgent;
 if (u.indexOf('Android') > -1 || u.indexOf('Linux') > -1) {//安卓手機
 } else if (u.indexOf('iPhone') > -1) {//蘋果手機
 //屏蔽ios下上下彈性
 $(window).on('scroll.elasticity', function (e) {
  e.preventDefault();
 }).on('touchmove.elasticity', function (e) {
  e.preventDefault();
 });
 } else if (u.indexOf('Windows Phone') > -1) {//winphone手機
 }
 //預加載
 loading();
}

var date_start;
var date_end;
date_start = getNowFormatDate();
//加載圖片
var loading_img_url = [
 "./image/0001.jpg",
 "./image/0002.jpg",
 "./image/0003.jpg",
 "./image/0004.jpg",
 "./image/0005.jpg",
 "./image/0006.jpg",
 "./image/0007.jpg",
 "./image/0008.jpg",
 "./image/0009.jpg",
 "./image/0010.jpg",
 "./image/0011.jpg",
 "./image/0012.jpg",
 "./image/0013.jpg",
 "./image/0014.jpg",
 "./image/0015.jpg",
 "./image/0016.jpg",
 "./image/0017.jpg",
 "./image/0018.jpg",
 "./image/0019.jpg",
 "./image/0020.jpg",
 "./image/0021.jpg",
 "./image/0022.jpg",
 "./image/0023.jpg",
 "./image/0024.jpg",
 "./image/0025.jpg",
 "./image/0026.jpg",
 "./image/0027.jpg",
 "./image/0028.jpg",
 "./image/0029.jpg",
 "./image/0030.jpg",
 "./image/0031.jpg",
 "./image/0032.jpg",
 "./image/0033.jpg",
 "./image/0034.jpg",
 "./image/0035.jpg",
 "./image/0036.jpg",
 "./image/0037.jpg",
 "./image/0038.jpg",
 "./image/0039.jpg",
 "./image/0040.jpg",
 "./image/0041.jpg",
];

//加載頁面
function loading() {
 var numbers = 0;
 var length = loading_img_url.length;

 for (var i = 0; i < length; i++) {
 var img = new Image();
 img.src = loading_img_url[i];
 img.onerror = function () {
  numbers += (1 / length) * 100;
 }
 img.onload = function () {
  numbers += (1 / length) * 100;
  $('.number').html(parseInt(numbers) + "%");
  console.log(numbers);
  if (Math.round(numbers) == 100) {
  //$('.number').hide();
  date_end = getNowFormatDate();
  var loading_time = date_end - date_start;
  //預加載圖片
  $(function progressbar() {
   //拼接圖片
   $('.shade').hide();
   var tagHtml = "";
   for (var i = 1; i <= 41; i++) {
   if (i == 1) {
    tagHtml += ' <div id="first" style="background:url(image/00' + (i < 10 ? '0' + i : i) + '.jpg) center top no-repeat;background-size:100%"></div>';
   } else if (i == 41) {
    tagHtml += ' <div id="end" style="background:url(image/00' + (i < 10 ? '0' + i : i) + '.jpg) center top no-repeat;background-size:100%"></div>';
   } else {
    tagHtml += ' <div style="background:url(image/00' + (i < 10 ? '0' + i : i) + '.jpg) center top no-repeat;background-size:100%"></div>';
   }
   }
   $(".flipbook").append(tagHtml);
   var w = $(".graph").width();
   $(".flipbook-viewport").show();
  });
  //配置turn.js
  function loadApp() {
   var w = $(window).width();
   var h = $(window).height();
   $('.flipboox').width(w).height(h);
   $(window).resize(function () {
   w = $(window).width();
   h = $(window).height();
   $('.flipboox').width(w).height(h);
   });
   $('.flipbook').turn({
   // Width
   width: w,
   // Height
   height: h,
   // Elevation
   elevation: 50,
   display: 'single',
   // Enable gradients
   gradients: true,
   // Auto center this flipbook
   autoCenter: true,
   when: {
    turning: function (e, page, view) {
    if (page == 1) {
     $(".btnImg").css("display", "none");
     $(".mark").css("display", "block");
    } else {
     $(".btnImg").css("display", "block");
     $(".mark").css("display", "none");
    }
    if (page == 41) {
     $(".nextPage").css("display", "none");
    } else {
     $(".nextPage").css("display", "block");
    }
    },
    turned: function (e, page, view) {
    console.log(page);
    var total = $(".flipbook").turn("pages");//總頁數
    if (page == 1) {
     $(".return").css("display", "none");
     $(".btnImg").css("display", "none");
    } else {
     $(".return").css("display", "block");
     $(".btnImg").css("display", "block");
    }
    if (page == 2) {
     $(".catalog").css("display", "block");
    } else {
     $(".catalog").css("display", "none");
    }
    }
   }
   })
  }
  yepnope({
   test: Modernizr.csstransforms,
   yep: ['js/turn.js'],
   complete: loadApp
  });
  }
  ;
 }
 }
}

function getNowFormatDate() {
 var date = new Date();
 var seperator1 = "";
 var seperator2 = "";
 var month = date.getMonth() + 1;
 var strDate = date.getDate();
 if (month >= 1 && month <= 9) {
 month = "0" + month;
 }
 if (strDate >= 0 && strDate <= 9) {
 strDate = "0" + strDate;
 }
 var currentdate = date.getFullYear() + seperator1 + month + seperator1 + strDate
 + "" + date.getHours() + seperator2 + date.getMinutes()
 + seperator2 + date.getSeconds();
 return currentdate;
}


4、最終實現結果

注:圖片是從網上隨便下載的,所以圖片的尺寸不規范,導致在手機上浏覽時圖片不是很完整【不是因為代碼寫的有問題哦】 !!! 代碼打包中沒有加入真實項目中的圖片,如需看到最佳的效果,建議圖片尺寸設計為:750*1217,由於個人的時間和精力有限,我寫的這個Demo使用的圖片就沒有將圖片一一修改為750*1217的尺寸。

源碼下載:http://xiazai.jb51.net/201606/yuanma/Turn.js-fanshu(jb51.net).rar

以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持。

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