jQuery melaksanakan viewer_jquery imej mudah-tutorial js-php.cn

Dalam projek itu, saya membuat DIY pemapar gambar. Kerana kod awal bukan milik saya, saya hanya menukarnya sedikit dan ia tidak menjadi sangat baik. Saya akan menulis semula gaya dan enkapsulasi apabila saya mempunyai masa pada masa hadapan, hanya mengumpulkannya sebagai sandaran. Jika ada kasut kanak-kanak yang berguna, anda boleh mengubah suai sepenuhnya atas dasar ini Ia agak mudah dan kodnya agak mudah

Pemerhati gambar mempunyai beberapa fungsi utama:

　 1. Paparkan gambar dan maklumat gambar (nama gambar, penerbit, dll.)

　2. Tukar gambar

　3. Tutup pemapar gambar

Fungsi antara muka permulaan pictureViewer.init: function(picInfos,tapNumber,isBig)

picInfos: 传入图片组信息，必须，格式如下
 var picInfos = [
  {
   "url" : "default.png",
   "data": [
   {
    "key":"名称:",
    "value":"测试图片"
   },
   {
    "key":"发布者：",
    "value":"chua"
   }
   ]
  },
  {
   "url" : "test.jpeg",
   "data": [
   {
    "key":"名称",
    "value":"测试图片"
   },
   {
    "key":"发布者：",
    "value":"发大水发大水发顺风h"
   },
   {
    "key":"这个图片的其他信息",
    "value":"vsfsgsdgfds234323424"
   }
   ]
  },
  ...
 ] //传入参数的样式

Salin selepas log masuk

nombor ketik: Indeks gambar yang akan dipaparkan dalam senarai gambar, mesti bermula dari 0
isBig: Sama ada hendak menggunakan imej besar untuk tontonan, lalainya adalah palsu, pilihan
Kod sumber html dan css adalah seperti berikut (contoh berikut)

<!DOCTYPE html>
<html lang="ch-cn">
 <head>
　　<meta charset="utf-8">
　　<script type="text/javascript" src='jquery-1.9.1.js'></script>
 <link rel="stylesheet" type="text/css" href="imgTap.css">
 <script type="text/javascript" src='imgTap.js'></script>
 <style type="text/css">
 html,body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, button, textarea, p, blockquote, th, td{
  margin: 0;
  padding:0;
 }
 *{
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
 }

 body{
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
 }
 .imgTapDetail {
  display: none;
  position: absolute;
  z-index: 2000;
  top: 0;
  width: 100%;
  height: 100%;
  background: none transparent scroll repeat 0% 0%;
  color: #000 !important;
 }
 .page-secShadow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  background-color: rgba(0,0,0,.3);
  filter: alpha(opacity=50);
 }

 .page-shadowContent {
  width: 40%;
  margin: 0 auto;
  margin-top: 20%;
  position: relative !important;
  min-width: 400px;
 }
 .page-shadowContent.widget-big{

 }
 .leftTap, .rightTap {
  margin-top: 50%;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  position: absolute;
  top: -80px;
  cursor: pointer;
 }
 .leftTap {
  left: -30%;
  background: url("imgTap.png") 0 0 no-repeat;
 }
 .rightTap {
  right: -30%;
  background: url("imgTap.png") -80px 0 no-repeat;
 }
 .closeTap {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  position: absolute;
  right: -30px;
  top: -30px;
  cursor: pointer;
  background: url("imgTap.png") 0 -165px no-repeat;
  z-index: 99;
 }
 .widget {
  padding: 0 5px;
  -webkit-box-shadow: none;
  -moz-box-shadow: none;
  box-shadow: none;
  margin: 3px 0 10px 0;
 }
 .widget-body {
  background-color: #fff;
  -webkit-box-shadow: 1px 0 10px 1px rgba(0,0,0,.3);
  -moz-box-shadow: 1px 0 10px 1px rgba(0,0,0,.3);
  box-shadow: 1px 0 10px 1px rgba(0,0,0,.3);
  padding: 12px;
 }
 .page-shadowContent .widget-body {
  min-height: 200px;
  padding: 15px!important;
  border: 1px solid #ccc;
  overflow: hidden;
 }
 .widget-body .row {
  margin-right: -10px !important;
  margin-left: -10px !important;
 }
 .imgShow {
  text-align: center;
  height: 400px;
  padding-left: 10px;
  padding-right: 10px;
  /*background: url(default.png) center no-repeat;*/
 }
 #tapContent{
  padding-left: 10px;
  padding-right: 10px;
 }
 .imgContent {
  max-width: 400px;
  max-height: 400px;
  vertical-align: middle;
 }
 .widget-body img {
  max-width: 100%;
  height: auto!important;
 }
 .imgShow > span {
  height: 100%;
  display: inline-block;
  vertical-align: middle;
 } 
 .imgTapDetail .form-group {
  overflow: hidden;
  margin-bottom: 0 !important;
  position: relative;
  min-height: 34px;
 }
 .widget-detail .form-group .detail-LabelStyle {
  float: left;
  padding-left: 5px;
  /* max-width: 50%; */
  text-align: left;
  line-height: 34px!important;
  color: rgb(115, 115, 115);
  padding-right: 5px;
  height: 34px;
  overflow: hidden;
  left: 0;
  top: 0;
 }
 .widget-detail .form-group .detail-SpanStyle {
  padding: 8px 0 6px 5px;
  line-height: 20px;
  width: auto;
  height: auto!important;
  min-height: 34px;
  float: left;
  /* margin-left: 80px; */
  word-break: break-all;
 }
 .widget-big {
  width: 80%;
  min-width: 300px;
 }
 .widget-big .leftTap{
  left: -10%;
 }
 .widget-big .rightTap{
  right: -10%;
 }
 .widget-big .widget-detail{
  padding: 40px 0;
 }
 .widget-big .imgShow{
  min-height: 500px;
 }
 .widget-big .imgShow img{
  max-width: 800px; 
  max-height: 550px;
 }
 </style>
 </head>
 <body >
 <div class="imgTapDetail"></div>
 <script type="text/javascript">
 var picInfos = [
  {
  "url" : "default.png",
  "data": [
   {
   "key":"名称:",
   "value":"测试图片"
   },
   {
   "key":"发布者：",
   "value":"chua"
   }
  ]
  },
  {
  "url" : "test.jpeg",
  "data": [
   {
   "key":"名称",
   "value":"测试图片"
   },
   {
   "key":"发布者：",
   "value":"发大水发大水发顺风h"
   },
   {
   "key":"这个图片的其他信息",
   "value":"vsfsgsdgfds234323424"
   }
  ]
  }
 ] 
 pictureViewer.init(picInfos,0,true);
 </script> 
</html>

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Kod sumber js adalah seperti berikut

pictureViewer = {
 picInfos: [],
 curPicIndex: 0,
 isBig:false,//大图查看？默认为false。默认图片显示区域为window宽度的40%，大图为80%
 imgTapSelector:".imgTapDetail",
 init: function(picInfos,tapNumber,isBig){
  var _this = this;

  _this.picInfos = picInfos;
  _this.curPicIndex = tapNumber;
  _this.isBig = isBig;
  tapImgInit();
  
  //图片查看器初始化
  function tapImgInit(){
   //页面代码和事件只需要初始化一次即可
   if(!_this.guid){
    _this.guid = 1;
    initTapImgHtml();
    $(document).on("click","#rightTap",function(){
     _this.curPicIndex++;
     if(_this.curPicIndex == _this.picInfos.length){
      _this.curPicIndex = 0;
     }
     $("#tapContent").html("")
     tapImg()
    }).on("click","#leftTap",function(){
     _this.curPicIndex--;
     if(_this.curPicIndex < 0){
      _this.curPicIndex = _this.picInfos.length-1;
     }
     $("#tapContent").html("")
     tapImg();
    }).on("click","#closeTap",function(){
     $(_this.imgTapSelector).hide("fast")
    })
   }
   var offTop = top.document.body.scrollTop || top.document.documentElement.scrollTop;
   $('#imgTapPanel').css("margin-top",_this.isBig&#63;(offTop>30&#63;offTop:30):offTop + 100)
   tapImg();
   $(_this.imgTapSelector).show("fast");
  }
  //初始化图片查看器的html代码
  function initTapImgHtml(){
   var $detailText = '<div class="page-secShadow" >'
    + '<div id="imgTapPanel" class="page-shadowContent '+(_this.isBig&#63;"widget-big":"")+'">'
    + '<div id="leftTap" class="leftTap"></div>'
    + '<div id="rightTap" class="rightTap"></div>'
    + '<div id="closeTap" class="closeTap"></div>'
    + '<div class="widget row"><div class="widget-body">'
    + '<div class="widget-detail row">'
    + '<div class="imgShow">'
    + '<img src="logo.png" id="tapImg" class="imgContent"><span></span>'
    + '</div>'
    + '<div id="tapContent"></div>'
    + '</div></div></div></div></div>';  
   
   $(_this.imgTapSelector).html($detailText);
   hoverButton("#leftTap", 0, 0, 0, "-80px");
   hoverButton("#rightTap", "-80px", 0, "-80px", "-80px");
   hoverButton("#closeTap", 0, "-165px", "-60px", "-165px");
  }
  //添加左右切换图标、关闭图标的hover响应事件。这个其实可以起到css中更好一些
  function hoverButton(id, x, y, A, B){
   $(id).hover(function(){
    $(this).css('background-position', A + ' '+ B)
   },function(){
    $(this).css('background-position', x + ' '+ y)
   })
  }
  //刷新当前图片及图片信息
  function tapImg(){
   var reg = /[:：]$/,
   leftTap = $("#leftTap"),
   rightTap = $("#rightTap"),
   imgTap = $("#tapImg"),
   contentTap = $("#tapContent");

   leftTap.css("display","block");
   rightTap.css("display","block");
   if(_this.picInfos.length == 1){
    leftTap.css("display","none");
    rightTap.css("display","none");
   }
   imgTap.attr("src",_this.picInfos[_this.curPicIndex].url);

   var data = _this.picInfos[_this.curPicIndex].data,
   dataLength = data.length,
   $text = "";

   for(var i=0; i<dataLength; i++){
    $text += '<div class="form-group">'
     + '<label class="detail-LabelStyle">'+data[i].key.replace(reg,"")+'：</label>'
     + '<span id="spanLoginName" class="detail-SpanStyle">'+data[i].value+'</span>'
     + '</div>';
   };
   contentTap.empty().append($text);

   setTimeout(function(){
    if(_this.isBig && imgTap.height() > 400){
     imgTap.parent().attr("style","height:inherit");
    }else{
     imgTap.parent().removeAttr("style");
    }
   },1);
  }
 }
}

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Saya harap artikel ini akan membantu semua orang yang mempelajari pengaturcaraan JavaScript.