JSFiddle - React, Tailwind, and code Playground
JavaScript
const marks = {
mark_01: {
x: 10,
y: 200
},
mark_02: {
x: 200,
y: 100
},
mark_99: {
x: 1000,
y: 1039
}
};
const edited = Object.fromEntries(Object.entries(marks).map(
([k,{x,y}]) => [k,{x: x+10, y: y+10}]
));
console.log(edited);