显示PDF文件在Magnific中-弹出模式

<a href="path/to/pdf/file.pdf" class="popup-link">打开PDF文件</a>

$(document).ready(function() {
  $('.popup-link').magnificPopup({
    type: 'iframe',
    iframe: {
      markup: '<div class="mfp-iframe-scaler">'+
                '<div class="mfp-close"></div>'+
                '<iframe class="mfp-iframe" frameborder="0" allowfullscreen></iframe>'+
              '</div>',
      patterns: {
        youtube: {
          index: 'youtube.com/',
          id: 'v=',
          src: 'https://www.youtube.com/embed/%id%?autoplay=1'
        },
        vimeo: {
          index: 'vimeo.com/',
          id: '/',
          src: 'https://player.vimeo.com/video/%id%?autoplay=1'
        },
        gmaps: {
          index: '//maps.google.',
          src: '%id%&output=embed'
        }
      },
      srcAction: 'iframe_src',
    }
  });
});