.substring()

Return a part of a string from a given starting index or between start and end index. Index starts at zero.

string.substring(startIndex, endIndex);

• endIndex is optional.

Returning a part of a string from a given starting index:

console.log('Do you love JavaScript or Python?'.substring(2));
// Output: you love JavaScript or Python?

Returning a part of a string between start and end index:

console.log('Do you love JavaScript or Python?'.substring(3, 6));
// Output: you