Object.keys(obj) returns key names, Object.values(obj) the values, and Object.entries(obj) an array of [key, value] pairs. They let you loop objects with array methods (for...of, map) and convert back with Object.fromEntries.
Object.keys(obj) returns key names, Object.values(obj) the values, and Object.entries(obj) an array of [key, value] pairs. They let you loop objects with array methods (for...of, map) and convert back with Object.fromEntries.
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<script>const o={a:1,b:2,c:3};
document.getElementById('o').textContent=Object.entries(o).map(([k,v])=>k+'='+v).join(' ');</script></body></html>