Modify and manipulate JavaScript array

Question

Here is an array example I have:

var array= ['business>management', 'News>Entertainment News', 'business>Entrepreneurship'];

I want this result:

['business', 'management', 'News', 'Entertainment News', 'Entrepreneurship']

It means, separate from this '>' No duplicate

This is an example of where I'm at but it just removes the arrow '>' jsfiddle

Answer 1

You can use reduce() and Set combination for example. Read from the docs:

The Set object lets you store unique values of any type, whether primitive values or object references.

The reduce() method executes a reducer function (that you provide) on each element of the array, resulting in single output value.

Please see a possible working solution.

const array = ['business>management', 'News>Entertainment News', 'business>Entrepreneurship'];

const result = array.reduce((a,c) => {
  c.split('>').forEach(e => a.add(e));
  return a;
}, new Set());

const unique = Array.from(result);

console.log(unique);

I hope that helps!