JAVASCRIPT

get distinct values from array of arrays

const arrOfObjs = [
    {
      name: 'someName',
      tags: [
        'sci-fi',
        'strategy',
        'sandbox',
      ]
    },
    {
      name: 'someOtherName',
      tags: [ 
        'sci-fi', 
        'mining', 
        'woodcutting', 
        'sandbox'
      ]
    }
  ];

let uniqueTags = [...new Set(arrOfObj.map(obj => obj.tags).flat(1))];

// ['sci-fi', 'strategy', 'sandbox', 'mining', 'woodcutting']

js get distinct values from array

var myArray = ['a', 1, 'a', 2, '1'];

let unique = [...new Set(myArray)];

console.log(unique); // unique is ['a', 1, 2, '1']

javascript get distinct values from array

const categories = ['General', 'Exotic', 'Extreme', 'Extreme', 'General' ,'Water', 'Extreme']
.filter((value, index, categoryArray) => categoryArray.indexOf(value) === index);

This will return an array that has the unique category names
['General', 'Exotic', 'Extreme', 'Water']