array to multidimensional object-CodePudding

I have a dynamic array for examples:

var myarray = ['country','state','city','town'] or

var myarray = ['country','state'] or

var myarray = ['country','state','city']

How to convert it to

var myobject = country['state']['city']['town'] or

var myobject = country['state'] or

var myobject = country['state']['city']

because finally I will assign a value to the object for example country['state']['city']['town'] = 'some small town in Italy' etc

Thanks in advance

CodePudding user response：

A little bit of recursion will take care of that for you:

const array = ['country','state','city','town'];
const fn = ([first, ...rest]) => ({ [first]: rest.length ? fn(rest) : null });

console.log(fn(array));

CodePudding user response：

You may use Array.reduceRight() to create such an object:

var myarray = ['country','state','city','town'];
const obj = myarray.reduceRight((acc, cur) => ({ [cur]: acc }), 'some small town in Italy');

console.log(obj);