JSFiddle - React, Tailwind, and code Playground

JavaScript

var companies= [{
 name: 'Microsoft',
 id: 1,
 employees: [5 , 9]
}, {
 name: 'Google',
 id: 2,
 employees: [1]
}, {
 name: 'LinkedIn',
 id: 3,
 employees: [10]
}];

var Employees = []; //initialize  
companies.forEach(function(company) {
    if (company.name == "Microsoft"){
        Employees = company.employees;
        //whatever you like
        Employees.forEach(function(id){
              alert(id);
        });

    }
});