How to String Split in javascript

I have a string

fullName = ‘Ross beddy washington andres’

I need to split this in to firstName, middleName and lastName.

Rule to split the names:

when receiving 2 words: 1st LastName / firstName

when receiving 3 words: 1st LastName / 2nd LastName / firstName

when receiving 4 words: 1st LastName / 2nd LastName / firstName/ MiddleName

when receiving 5 or more than 5 words follow the rule for 4 words

For above example below will be the output:

firstName = washington

middleName = andres

lastName = Ross beddy

my code:

        
const fullName = 'Ross beddy washington andres';
const names = {};
const nameSplit = fullName.split(' ');
if (nameSplit.length == 4) {
    names.firstName = nameSplit[2];
    names.lastName = nameSplit[0] + ' ' + nameSplit[1];
    names.middleName = nameSplit[3];

} else if (nameSplit.length == 3) {
    names.firstName = nameSplit[2];
    names.lastName = nameSplit[0] + ' ' + nameSplit[1];
    names.middleName = '';           
} else if (nameSplit.length == 2){
    names.firstName = nameSplit[1];
    names.lastName = nameSplit[0] ;
    names.middleName = ''
}
console.log(names);

How to include the logic if there are more than 4 words ? is there any elegant way to do this!

>Solution :

You can use array manipulation methods to achieve this.

const fullName = 'Ross beddy washington andres';
const nameSplit = fullName.split(' ');

const names = {};

if (nameSplit.length >= 2) {
    if (nameSplit.length === 2) {
        names.lastName = nameSplit[0];
        names.firstName = nameSplit[1];
        names.middleName = '';
    } else if (nameSplit.length === 3) {
        names.lastName = nameSplit[0] + ' ' + nameSplit[1];
        names.firstName = nameSplit[2];
        names.middleName = '';
    } else if (nameSplit.length === 4) {
        names.lastName = nameSplit[0] + ' ' + nameSplit[1];
        names.firstName = nameSplit[2];
        names.middleName = nameSplit[3];
    } else {
        names.lastName = nameSplit.slice(0, -2).join(' ');
        names.firstName = nameSplit[nameSplit.length - 2];
        names.middleName = nameSplit[nameSplit.length - 1];
    }
} else {
    console.log('Invalid name format');
}

console.log(names);