JSFiddle - React, Tailwind, and code Playground

JavaScript

var items = [
    {
        id: 1,
        name: 'Item 1',
        image: 'img 1',
    },
    {
        id: 2,
        name: 'Item 2',
        image: 'img 2',
    },
    {
        id: 3,
        name: 'Item 3',
        image: 'img 3',
    },
]; 

var _helpers = {

    inArray: function(val, arr) {
        for (var i = 0; i < arr.length; i++){
            if (arr[i].name === val)
                return true;
        }
        return false;
    },

};

console.log(_helpers.inArray('Item 1', items, 'name'));
console.log(_helpers.inArray('aaa', items, 'name'));