es6 filter方法應用

 let arr =[
    {title:'aaaa',read:100,hot:true},
    {title:'bbbb',read:50,hot:false},
    {title:'ccc',read:100,hot:true}

    ];

  //arr.filter() //過濾,過濾一些不合格的元素,如果回調函數返回true,就留下來
  let newArr =arr.filter((item,index,arr)=>{
    return item.hot
  })
  console.log(newArr)

 效果圖