Preparation code

<script>
const employee = [
  { 
    companyName: "xyz.com",
    age: 26,
    role: "Software Engineer",
    salary: 35000,
    timeSpent: 3
  },
  {
    companyName: "My Traveler",
    age: 28,
    role: "Senior Software Engineer",
    salary: 65000,
    timeSpent: 2
  },
  {
    companyName: "Product Wheel",
    age: 31,
    role: "Lead Engineer",
    salary: 90000,
    timeSpent: 3
  },
  {
    companyName: "Make My Budget",
    age: 35,
    role: "Consultant",
    salary: 125000,
    timeSpent: 4
  },
];
</script>
    

Test runner

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const companies = [];
for(i=0; i < employee.length; i++) {
  const company = employee[i].companyName;
  companies.push(company);
}

const companies = [];
function getCompaniesName(emp) {
  const company = emp.companyName;
  companies.push(company);
}
employee.forEach(getCompaniesName);

const companies = employee.map(emp => emp.companyName);

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