JSFiddle - React, Tailwind, and code Playground
JavaScript
var data = ["9.968034,77.906814", "8.699679,77.478347", "8.797406,80.895095"],
result = data.map(s =>
// assign block
(([lat, lng]) => ({ lat, lng }))
(s.split(',')) // <-- destructure block
);
console.log(result);