JSFiddle - React, Tailwind, and code Playground
JavaScript
var o = {
k1 : 'v1',
k2: 'v2',
k3: 'v3'
};
Object.assign(o, {k2: 'v21', k3: 'v31'});
console.log(JSON.stringify(o));
var o = {
k1 : 'v1',
k2: 'v2',
k3: 'v3'
};
Object.assign(o, {k2: 'v21', k3: 'v31'});
console.log(JSON.stringify(o));