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();  }) };