JSFiddle - React, Tailwind, and code Playground

JavaScript

var input = [{
  url: 'some url here',
  clickHandler: 'click handler function'
}, {
  url: 'some other url here',
  clickHandler: 'other clickHandler function'
}]

function changeUrl(url) {
  return 'updated url';
}

var output = input.map(obj => {
  return {
    url: changeUrl(obj.url),
    clickHandler: obj.clickHandler
  }
});

console.log(output)