JSFiddle - React, Tailwind, and code Playground

JavaScript

var result = [{
    id: 24,
    name: "xyz"
}, {
    id: 45,
    name: "tze"
}]

var moreDetails = [{
    id: 24,
    name2: "hyi"
}, {
    id: 45,
    name2: "tikw"
}]

for (var i = 0; i < result.length; i++) {
    result[i].name2 = moreDetails[i].name2;
}

console.log(result)