How to remove multiply dictionary keys from array of dictionaries in JavaScript?

I have

let Remove = ["Last", "Gender"];
let Contact = [{"First": "Bob", "Last": "Jim", "Gender": "M"}, 
                {"First": "Amy", "Last": "Christen", "Gender": "F"}];

How I remove multiple keys from the dictionary with the keys I want to remove stored in an array?

To get

[{"First": "Bob"}, {"First": "Amy"}]  

TS Playground

>Solution :

You could map the objects and reduce the copy by removing keys.

const remove = ["Last", "Gender"];
const contacts = [
  {"First": "Bob", "Last": "Jim", "Gender": "M"}, 
  {"First": "Amy", "Last": "Christen", "Gender": "F"}
];

const removed = contacts.map(contact => {
  return remove.reduce((copy, keyToRemove) => {
    delete copy[keyToRemove];
    return copy;
  }, { ...contact });
});

console.log(removed);

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Here is a TS implementation. You can use a Record<string, string> type to represent your object.

const remove: string[] = ["Last", "Gender"];

const contacts = [
  {"First": "Bob", "Last": "Jim", "Gender": "M"}, 
  {"First": "Amy", "Last": "Christen", "Gender": "F"}
];

const removed = prune(contacts, remove);

console.log(removed);

function prune<TObj extends Record<string, string>>(
        records: TObj[], keysToRemove: string[]): TObj[] {
    return records.map(contact => {
        return keysToRemove.reduce((copy: TObj, keyToRemove: string) => {
            delete copy[keyToRemove]; // Remove they key from the copy
            return copy;
        }, { ...contact });
    });
}