// pages/history/history.js Page({ /** * 页面的初始数据 */ data: { index:0, pros:[ { url:"/pages/images/11.jpg" }, { url:"/pages/images/22.jpg" }, { url:"/pages/images/33.jpg" }, { url:"/pages/images/44.jpg" }, { url:"/pages/images/55.jpg" } ] }, navclick(event){ console.log("进入点击事件"); console.log(event.target.dataset.index); this.setData({ index:event.target.dataset.index })  var index =event.target.dataset.index;    var result=null;   if(index==0){     result=[ { url:"/pages/images/11.jpg" }, { url:"/pages/images/22.jpg" }, { url:"/pages/images/33.jpg" }, { url:"/pages/images/44.jpg" }, { url:"/pages/images/55.jpg" }   ];   }else if(index==1){     result=[ { url:"/pages/images/21.png" }, { url:"/pages/images/22.png" }, { url:"/pages/images/23.png" }, { url:"/pages/images/24.png" }, { url:"/pages/images/25.png" }, { url:"/pages/images/26.png" }, { url:"/pages/images/27.png" }, { url:"/pages/images/28.png" } ]; }else{ result=[ { url:"/pages/images/11.png" }, { url:"/pages/images/12.png" }, { url:"/pages/images/13.png" }, { url:"/pages/images/14.png" }, { url:"/pages/images/15.png" }, { url:"/pages/images/16.png" }, { url:"/pages/images/17.png" }, { url:"/pages/images/18.png" }, { url:"/pages/images/19.png" }, { url:"/pages/images/20.png" } ]}  this.setData({ pros:result })   } } )