javascript移动端 电子书 翻页效果实现代码

这篇文章主要介绍了javascript移动端 电子书 翻页效果实现代码,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

效果

javascript移动端 电子书 翻页效果实现代码

1、后端给一长串的纯文本

2、前端根据屏幕的高度,将文本切割为 n 页

3、使用插件 turn.js 将切割好的每页,加上翻书效果

代码

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"> <title>手机端书本翻页效果</title> <style type="text/css"> * { padding: 0; margin: 0; } html, body { height: 100%; width: 100%; } #magazine { width: 100%; height: 100%; position: relative; overflow: hidden; } #pages { width: 100%; height: 100%; position: relative; z-index: 1; } #pages div.turn-page{ background: #fff; } #content{ height: 0; overflow: hidden; width: 100%; } #contentText{ width: 100%; } /* 这里是内容的样式,修改时候,一起修改 */ div.turn-page,#contentText{ white-space: pre-wrap; box-sizing: border-box; padding: 0 10px; } #alert{ position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); background: rgba(0,0,0,0.6); border-radius: 4px; color: #fff; z-index: 10; font-size: 12px; padding: 6px 10px; display: none; } </style> </head> <body> <div> <div></div> <div> <div></div> </div> </div> <div></div> <script type="text/javascript" src="https://www.jb51.net/js/jquery-3.3.1.min.js"></script> <script type="text/javascript" src="https://www.jb51.net/js/turn.js"></script> <script type="text/javascript"> var writeStr = "" //模拟请求文本数据 $.get("./js/data.txt",function(data){ initPage(data); }) function initPage(writeStr){ if(!writeStr){ return ; } var $wrap = $("#magazine"); var $page = $("#pages"); var w =$page.width(); //窗口的宽度 var h = $page.height(); //窗口的高度 console.log(h) var $content = $("#contentText"); $content.html(writeStr); var len = writeStr.length; //总长度 var cH = $content.height(); //总高度 var pageStrNum; //每页大概有多少个字符 if(cH > h){ pageStrNum = (h / cH )*len; //每页大概有多少个字符 var obj = overflowhiddenTow($content,writeStr,h); $page.append('<div>'+obj.curr+'</div>'); while(obj.next && obj.next.length > 0){ obj = overflowhiddenTow($content, obj.next,h); $page.append('<div>'+obj.curr+'</div>'); } }else{ return ; } //文字切割算法 function overflowhiddenTow($texts, str , at) { var throat = pageStrNum; var tempstr = str.substring(0, throat); var len = str.length; $texts.html(tempstr); //取的字节较少,应该增加 while ($texts.height() < at && throat < len) { throat = throat + 2; tempstr = str.substring(0, throat); $texts.html(tempstr); } //取的字节较多,应该减少 while ($texts.height() > at && throat > 0) { throat = throat - 2; tempstr = str.substring(0, throat); $texts.html(tempstr); } return { curr:str.substring(0,throat), next:str.substring(throat) } } $page.turn({ width: w, height: h, elevation: 50, display: 'single', gradients: true, autoCenter: true, when: { start: function() {}, turning: function(e, page, view) {}, turned: function(e, page, view) { } } }); var moveObj = null; var endObj = null; function getPoint(e) { var obj = e; if (e.targetTouches && e.targetTouches.length > 0) { obj = e.targetTouches[0]; } return obj; } $wrap.on("touchstart mousedown", function(e) { var obj = getPoint(e); moveObj = { x: obj.clientX }; }); $wrap.on("touchmove mousemove", function(e) { var obj = getPoint(e); endObj = { x: obj.clientX }; }); $wrap.on("touchend mouseup", function(e) { if (moveObj && endObj) { var mis = endObj.x - moveObj.x; if (Math.abs(mis) > 30) { var pageCount = $page.turn("pages"); //总页数 var currentPage = $page.turn("page"); //当前页 if (mis > 0) { if (currentPage > 1) { $page.turn('page', currentPage - 1); } else { console.log("已经是第一页") showAlert('已经是第一页'); } } else { if (currentPage < pageCount) { $page.turn('page', currentPage + 1); } else { console.log("最后一页"); showAlert('已经是最后一页'); } } } } moveObj = null; endObj = null; }); var $alert = $("#alert"); var timer = null; function showAlert(msg){ clearTimeout(timer); $alert.text(msg); $alert.fadeIn(); timer = setTimeout(function(){ $alert.fadeOut(); },1000) } } </script> </body> </html>

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