JavaScript实现相册弹窗功能（zepto.js)

//放大图片
  $(page).on('click','.popupImage img',function () {
   var that = $(this);
   that.popupImage({
    this:that,
    width:"200px"
   })
  });

　　//相册弹窗
 $.fn.popupImage = function (obj) {
  var $this = obj.this;
  var sj_w = $this[0].naturalHeight;
  var src = $this.attr('src');
  var h = $('body').height();
  var w = $('body').width();
  var padding = 10;
  var shadeW = w - padding*2;
  var img = '',shade = '';
  
  img = '<div class="popup-image" style="position:absolute; top:0; left:0; z-index: 999999; padding:10px '+padding+'px; width: '+w+'px; height:'+h+'px; line-height: '+h+'px; text-align: center;" >' +
   '<img src="'+src+'" style="max-width: '+shadeW+'px"/></div>';
  shade = '<div class="shade" style="position:absolute; top:0; left:0; width: '+w+'px; height:'+h+'px;background: #000; z-index: 999990; opacity: .8;"></div>';

  $('body').append(shade);
  $('body').append(img);  

  $('.popup-image').on('click',function () {
   $('.popup-image').remove();
   $('.shade').remove();
  })

 };