We have the following javascript array:
[
{ team: 1, stat1: 17, stat2: 25, var1: 'okay', var3: 'nah', here: 24 },
{ team: 1, stat1: 17, stat2: 25, var1: 'okay', var3: 'nah', here: 24 },
{ team: 1, stat1: 17, stat2: 25, var1: 'okay', var3: 'nah', here: 24 }
]
and we are looking to add the suffix Agst to every key other than the team key, such that our output is:
[
{ team: 1, stat1Agst: 17, stat2Agst: 25, var1Agst: 'okay', var3Agst: 'nah', hereAgst: 24 },
{ team: 1, stat1Agst: 17, stat2Agst: 25, var1Agst: 'okay', var3Agst: 'nah', hereAgst: 24 },
{ team: 1, stat1Agst: 17, stat2Agst: 25, var1Agst: 'okay', var3Agst: 'nah', hereAgst: 24 }
]
Each object in our actual array of objects has >100 keys, and for this reason we are looking for a solution that specifically changes all key names other than team, rather than changing all keys with names ['stat1', 'stat2', 'var1', 'var3', 'here'] if possible.
You can easily achieve the result using map and Object.entries as:
const arr = [
{ team: 1, stat1: 17, stat2: 25, var1: "okay", var3: "nah", here: 24 },
{ team: 1, stat1: 17, stat2: 25, var1: "okay", var3: "nah", here: 24 },
{ team: 1, stat1: 17, stat2: 25, var1: "okay", var3: "nah", here: 24 },
];
const result = arr.map((o) =>
Object.fromEntries(
Object.keys(o).map((key) =>
key === "team" ? [key, o[key]] : [`${key}Agst`, o[key]]
)
)
);
console.log(result);/* This is not a part of answer. It is just to give the output full height. So IGNORE IT */
.as-console-wrapper { max-height: 100% !important; top: 0; }This seems to be working okay for me.
arr = [
{ team: 1, stat1: 17, stat2: 25, var1: 'okay', var3: 'nah', here: 24 },
{ team: 1, stat1: 17, stat2: 25, var1: 'okay', var3: 'nah', here: 24 },
{ team: 1, stat1: 17, stat2: 25, var1: 'okay', var3: 'nah', here: 24 }
]
arr.forEach((row, index, theArray) => {
let rowKeys = Object.keys(row).filter(key => key !== 'team');
rowKeys.forEach(key => {
theArray[index][`${key}Agst`] = theArray[index][key];
delete theArray[index][key];
});
});
console.log(arr);