filterとmapを一緒に書き込む

 let newarr = [];
 let arr = ['1','2','3','4','5']
 
 
 console.log("---arr---");
 console.log(arr);


 let arr2 = arr.filter(num => num % 2 !== 0)
 .map((num, i) =>{
   newarr.push(num*2);
   }

 );
  
 console.log(newarr);