从字符串数组中删除特定项目 javascript

Question

i have an array that is

const arr = ["a","b","c","d","e"]

I need to exclude a,b that is I need. How to achieve this in fastest possible way

["c","d","e"]

Answer 1

You can use this, if I understand it correctly

arr.filter((value) => value != 'a' && value != 'b')

gives below output

['c', 'd', 'e']

Answer 2

Using array.filter() we can do it. like:

arr = ["a","b","c","d","e"];
arr.filter(x => x !== 'a'); // output: ['b', 'c', 'd', 'e']

But if you want to remove a group of items then use another array and use validation with in filter() function.

Example:

arr = ["a","b","c","d","e"];
removeItems = ['a', 'b'];
arr.filter(x => removeItems.indexOf(x) < 0); // ['c', 'd', 'e']

Answer 3

you can do it in 1 line using spread operator

   const [one,two,three,...rest]=arr;

   console.log(rest); // it prints d,e excluding a,b,c.