turn.js异步加载实现翻书效果
turn.js异步加载实现翻书效果？很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
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1、阅读翻书js
/**
* 电子翻书
*/
//var width = 1080;
//var height = 1680;
var width = "10rem";
var height = "15.2rem";
window.onload = function () {
//预加载
//loading(18,1);
initData();
}
function getQueryString(name) {
var result = window.location.search.match(new RegExp("[\?\&]" + name + "=([^\&]+)", "i"));
if (result == null || result.length < 1) {
return "";
}
return result[1];
}
function initData(){
var book = getQueryString("bookId");
var count = getQueryString("pageCount");
loading_img_url = new Array();
for (var i = 0; i < count; i++) {
loading_img_url.push((i+1) + ".png");
}
var page = getQueryString("pageNum");
if(!page){
page =1;
}
loading(book,count,page);
}
var date_start;
var date_end;
date_start = getNowFormatDate();
//加载图片
var loading_img_url = [];
//加载页面
function loading(book,count,page) {
var numbers = 0;
var length = loading_img_url.length;
//var resUrl = ctxStatic+"/modules/intelligentquery/img/3/";
var resUrl = website + "/lawcase/bookScreenshot?bookId=" + book + "&page=";
var jsUrl = ctxStatic+"/modules/front/guide/vertical/";
var bookId = book;
var img = new Image();
img.src = resUrl + page;
//img.src = resUrl + pageNum + ".png";
img.onerror = function () {
numbers += (1 / length) * 100;
}
img.onload = function () {
numbers += (1 / length) * 100;
$('.number').html(parseInt(numbers) + "%");
console.log(numbers);
if (Math.round(numbers)) {
//$('.number').hide();
date_end = getNowFormatDate();
var loading_time = date_end - date_start;
//预加载图片
$(function progressbar() {
//拼接图片
$('.shade').hide();
var tagHtml = "";
var imgUrl = resUrl + page;
//var imgUrl = resUrl + (pageNum) + ".png";
if (pageNum == 1) {
tagHtml += " ";
} else if (pageNum == length) {
tagHtml += "
";
} else {
tagHtml += "
";
}
$(".flipbook").append(tagHtml);
var w = $(".graph").width();
$(".flipbook-viewport").show();
});
//配置turn.js
function loadApp() {
var w = width;
var h = height;
$('.flipboox').width(w).height(h);
$('.flipbook').turn({
width: w,
height: h,
elevation: 50,
pages: count,
display: 'single',
gradients: true,
autoCenter: true,
when: {
turning: function (e, page, view) {
var total = $(".flipbook").turn("pages");//总页数
$("#currentPage").html(page);
$("#pageCount").html("/"+total);
if (page == 1) {
$(".btnImg").css("display", "none");
$(".mark").css("display", "block");
} else {
$(".btnImg").css("display", "block");
$(".mark").css("display", "none");
}
if (page == length) {
$(".nextPage").css("display", "none");
} else {
$(".nextPage").css("display", "block");
}
},
turned: function (e, page, view) {
var total = $(".flipbook").turn("pages");//总页数
$("#currentPage").html(page);
$("#pageCount").html("/"+total);
// 判断翻页按钮点击事件以及状态样式
if(page >= total){
$("#next").addClass("btn-invalid").removeAttr('onclick');
}else{
$("#next").removeClass("btn-invalid").attr("onclick","next();");
}
if(page == 1){
$("#prev").addClass("btn-invalid").removeAttr('onclick');
$("#indexPage").css("display","none");
}else{
$("#prev").removeClass("btn-invalid").attr("onclick","prev();");
$("#indexPage").css("display","flex");
}
},
missing: function (e, pages) {
for (var i = 0; i < pages.length; i++) {
addPage(pages[i], $(this),bookId);
}
}
}
})
var cpage = getQueryString("pageNum");
$(".flipbook").turn('page', cpage);
}
yepnope({
test: Modernizr.csstransforms,
yep: [jsUrl+'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;
}
//异步加载
function addPage(page, book,bookId) {
//var resUrl = ctxStatic+"/modules/intelligentquery/img/3/";
var resUrl = website + "/lawcase/bookScreenshot?bookId=" + bookId + "&page=";
var imgUrl = resUrl + (page);
var tagHtml = "";
if (page == 1) {
tagHtml += "
";
} else if (page == length) {
tagHtml += "
