SOURCE

$(function(){
  $(document).on('click','.start',function(){
       $.ajax({
          url:'https://bird.ioliu.cn/v1?url=http://www.bing.com/HPImageArchive.aspx?idx=0&format=js&n=1',
          type:'GET',                                
          dataType:'jsonp',                            
          success:function(result){ 
            $('body').append(`<img src='http://bing.com/${result.images[0].url}'>`)
          },
          error:function(msg){
              alert(msg);                 //执行错误
          }
     }); 
  })
})

<button class="start">点我开始</button>