Assume we have the following array and we want to remove
Robert from the array:
const names = ['Peter', 'John', 'Sally', 'Robert', 'Laila']; const index = 3; const newNames = [...names.slice(0, index), ...names.slice(index + 1)]; console.log(newNames);
What we are doing with the
newNames array is creating a new array composed of two parts:
names.slice(0, index)- Return the
namesarray with elements from 0 to index-1.
names.slice(index + 1)- Return the
namesarray with elements from index+1 to the end of the names array.
2 above, we then use the spread operator in order to have both results in the new array. The new array is then:
['Peter', 'John', 'Sally', 'Laila'].
If we didn’t know the index of
Robert in the array, we can use the
indexOf() function as follows:
const index = names.indexOf('Robert');