const normArray = [1, 2, 3, 4, 5]; //array
const mapArray = normArray.map((num)=>{
return num * 5;
}) //mapping
const filterArray = mapArray.filter((num)=>{
num > 5;
}) //filtering
console.log(mapArray);
console.log(filterArray);
输出为=[5,10,15,20,25]&[],为什么空过滤数组?和平&祝福你:(谢谢
函数参数中没有返回布尔值。应该是:
const filterArray = mapArray.filter((num)=>{
return num > 5;
});