javascript - 通过单击背景区域关闭灯箱窗口？

Question

我开发了一个灯箱功能，我试图弄清楚如何通过单击显示图像后面的背景区域来关闭灯箱预览窗口(同时保持图像不受影响)。

这是一个演示片段。在右上角有一个按钮切换控件来关闭灯箱窗口，但我也希望能够通过单击图像周围的背景区域来关闭窗口。有什么意见吗？

更新:解决方案

感谢 Marouen Mhiri，终于让这个工作起来了.在这里更新了我的原始片段:

var $scrollTop = 0;
$('.pic > img').click(function() {
  var $body = $('body');
  $scrollTop = $(window).scrollTop();
  $body.css('position', 'fixed');
  $body.css('top', '-' + $scrollTop + 'px');
  $body.css('background-position', '0 -' + $scrollTop + 'px');
  var srcToCopy = $(this).attr('src');
  $body.find('.imgsrc').attr('src', srcToCopy);
  $body.addClass('no-scroll');
  $('#view').addClass("target");
});

$('#customlightbox-controls').on('click', function() {
  var $body = $('body');
  $body.css('position', '');
  $body.css('background-position', '');
  $scrollTop = $(window).scrollTop($scrollTop);
  $body.removeClass('no-scroll');
  $('#view').removeClass("target");
});

$('.customlightbox-imgwrap').on('click', function(e) {
  if(!$(e.target).hasClass('imgsrc')){
   var $body = $('body');
   $body.css('position', '');
   $body.css('background-position', '');
   $scrollTop = $(window).scrollTop($scrollTop);
   $body.removeClass('no-scroll');
   $('#view').removeClass("target");
  } 
});

body {
  background-color: #58d68d;
  margin: 0;
  padding: 0;
  border: 0;
  height: 100%;
  width: 100%;
}

body.no-scroll {
  overflow: hidden;
  height: auto;
  width: 100%;
}

.pic,
#imgsrc {
  display: inline-block;
  cursor: pointer;
}

img {
  width: 150px
}

a {
  display: inline-block;
  line-height: 0;
}

.container {
  text-align: center;
  display: block;
  width: 100%;
  line-height: 0;
}

.customlightbox {
  top: 0%;
  bottom: 0%;
  box-sizing: border-box;
  position: fixed;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: -5;
  opacity: 0;
}

.customlightbox-imgwrap {
  width: 100%;
  height: 100%;
  padding: 20px;
  box-sizing: border-box;
  position: relative;
  text-align: center;
}

.customlightbox img {
  width: auto;
  margin: auto;
  max-width: 100%;
  max-height: 100%;
  opacity: 0;
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}

#customlightbox-controls {
  cursor: pointer;
  box-sizing: border-box;
  position: fixed;
  height: 50px;
  width: 50px;
  top: -50px;
  right: -3px;
  z-index: 5;
  border-left: 2px solid white;
  border-bottom: 2px solid white;
  opacity: .7;
}

#close-customlightbox {
  display: block;
  position: absolute;
  overflow: hidden;
  height: 30px;
  width: 30px;
  right: 10px;
  top: 10px;
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
}

#close-customlightbox:before {
  content: "";
  display: block;
  position: absolute;
  height: 0px;
  width: 2px;
  left: 14px;
  top: 0;
  background: white;
  border-radius: 2px;
}

#close-customlightbox:after {
  content: "";
  display: block;
  position: absolute;
  width: 0px;
  height: 2px;
  top: 14px;
  left: 0;
  background: white;
  border-radius: 2px;
}

.customlightbox.target {
  z-index: 4;
  opacity: 1;
  display: inline-block;
}

.customlightbox.target img {
  opacity: 1;
}

.customlightbox.target~#customlightbox-controls {
  top: -3px;
}

.customlightbox.target~#customlightbox-controls #close-customlightbox:after {
  width: 30px;
}

.customlightbox.target~#customlightbox-controls #close-customlightbox:before {
  height: 30px;
}

.lb-animate {
  -webkit-transition: 0.5s ease-in-out;
  -moz-transition: 0.5s ease-in-out;
  -ms-transition: 0.5s ease-in-out;
  -o-transition: 0.5s ease-in-out;
  transition: 0.5s ease-in-out;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- Lightbox Instance 1 -->
<div class="container">
  <div class="pic">
    <img src="https://syedimranrocks.files.wordpress.com/2012/09/flower01low1.png">
  </div>
</div>

<!-- Lightbox Instance 2 -->
<div class="container">
  <div class="pic">
    <img src="http://downloadicons.net/sites/default/files/Rose-Coral-Icon-906534.png">
  </div>
</div>

<!-- Lightbox Instance 3 -->
<div class="container">
  <div class="pic">
    <img src="https://images.vexels.com/media/users/3/136645/isolated/lists/54b1517db1906889a6971939de45d2a8-purple-sunflower-cartoon.png">
  </div>
</div>

<!-- Lightbox Instance 4 -->
<div class="container">
  <div class="pic">
    <img src="http://i2.wp.com/lfisdelhi.com/wp-content/uploads/2016/05/Sunflower-icon.png">
  </div>
</div>

<!-- Lightbox Instance 5 -->
<div class="container">
  <div class="pic">
    <img src="http://icongal.com/gallery/image/203372/birthday_flower_love_valentine_yellow_rose.png">
  </div>
</div>

<!-- Lightbox Controls -->
<div class="customlightbox lb-animate" id="view">
  <div class="customlightbox-imgwrap">
    <img class="imgsrc" id="customlightbox-img" src="">
  </div>
</div>
<div id="customlightbox-controls" class="lb-animate">
  <a id="close-customlightbox" class="lb-animate"></a>
</div>

这个问题源于上一个问题，已回答 here .

Answer 1

只需使用包含灯箱的 div 的点击事件，仅当点击区域不包含图像时才触发该事件:

$('.customlightbox-imgwrap').on('click', function(e) {
   if(!$(e.target).hasClass('imgsrc')){ // check if target is not the image displayed
     var $body = $('body');
     $body.css('position', '');
     $body.css('background-position', '');
     $scrollTop = $(window).scrollTop($scrollTop);
     $body.removeClass('no-scroll');
     $('#view').removeClass("target");
   } 
});