JavaScript: Swap Object Key/Value ð
Here is a function that reverse the key/value of object.
That is, value become key, vice versa.
/* [ xah_swap_obj_key_val(xObj) return a new object that has its key and value swapped. If values are not unique, the previous is overwritten. Only enumerable key and string key counts. URL http://xahlee.info/js/js_reverse_obj_key_val.html Version: 2018-06-04 2023-10-11 ] */ const xah_swap_obj_key_val = ((xObj) => { const xnew = {}; Object.keys(xObj).forEach((x) => { xnew[xObj[x]] = x; }); return xnew; }); // ssss--------------------------------------------------- // test const xx = { a: 1, b: 2 }; console.log( JSON.stringify(xah_swap_obj_key_val(xx)) === '{"1":"a","2":"b"}', );