通过JS获取JSON数据并加载的步骤详解

<p class="container-fluid content ">
    <p class="container neirong">
      <p class="left fl">
        <p class="title">
          热门视频
        </p>
        <p class="medialist">
        </p>
      </p></p>
</p>

<script>
    $(document).ready(function(){
      console.log(1111)
   $.getJSON('data.json',function(data){         
            console.log(222)
          var mediahtml="";
          $.each(data,function(i,data) {
          mediahtml+='<p class="media">'+
          '<p class="media-left">'+
          '<a data-toggle="modal" data-target="#myModal">'+
          '@@##@@'+
            '</a>'+'</p>'+
            '<p class="media-body">'+
            '<p class="title">'+
              '<span class="classify">'+
                data["classify"]+
              '</span>'+
              '<span class="titlename media-heading">'+
                data['titlename']+
              '</span>'+
            '</p>'+
            '<span class="time">'+
              '<span class="glyphicon glyphicon-time"></span> '+
              '<span>'+data['pubdate']+'</span>'+
            '<p>'+data["intro"]+'</p>'+
            '<p class="guest">'+
              '<span class="jia">嘉</span>'+
              '<span class="name">'+data["name"]+'</span>'+
              '<span class="position">'+data["position"]+'</span>'+
              '<span class="glyphicon glyphicon-eye-open"></span>'+
              '<span class="click-rite"></span>'+
            '</p>'+
          '</p>'+
            
          '<p class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">'+
            '<p class="modal-dialog" role="document">'+
              '<p class="modal-content">'+
                '<p class="modal-header">'+
                  '<button type="button" class="close" data-dismiss="modal" aria-label="Close">'+
                    '<span aria-hidden="true">×</span>'+
                  '</button>'+
                '</p>'+
                '<p class="modal-body"></p>'+
            '</p>'+
          '</p>'+
          '</p>'
//          var url_mobi=data.url_mobi;
//          var url_pc=data.url_pc;
//          if ((navigator.userAgent.match(/(iPhone|iPod|Android|ios|iOS|iPad|Backerry|WebOS|Symbian|Windows Phone|Phone)/i))) {
//              $('.modal-body').prepend(url_mobi);
//              }else{
//              $('.modal-body').prepend(url_pc);
//              }    
              })
          $('.medialist').after(mediahtml);        
        }) 
        })
        $('#myModal').on('shown.bs.modal', function (e) {
          // 关键代码，如没将modal设置为 block，则$modala_dialog.height() 为零 
          $(this).css('display', 'block');
          var modalHeight = $(window).height() / 2 - $('#myModal .modal-dialog').height() / 2;
          $(this).find('.modal-dialog').css({
            'margin-top': modalHeight
          });
        });
        //点击预览图时判断
//        $('.modal').on('click', function () {
//          if ($('#myModal').css("display") == "none") {
//            $('.modal-body').children('iframe').attr('src', '');
//          } else {
//            $('.modal-body').children('iframe').attr('src',
//              'https://v.qq.com/iframe/player.html?vid=v0508nqkm75&tiny=0&auto=0');
//          }
//        })
    
  </script>