how can i check if an array of objects contains a key which is in array of strings js?-CodePudding

We have an array of objects like

const arr = [{id: "someId", name: {...}}, ...];
const skippedKeys = ["id"...]

How can i filtered the array of object based on skipped keys? The result should be:

const result = [{name: {...}}, ...];

Also i don't want to make a cycle inside the cycle. the result also could be implemented using lodash library. we should remove key with value as well.

CodePudding user response：

It's simple and no need for any nested cycles. There are two option to do that

Using includes function

    const result = arr.filter((item) => !result.includes(item.id));

Using set

    const dataSet = new Set(skippedKeys);
    const result = arr.filter((item) => !dataSet.has(item.id));

I prefer the second one as it excludes double checks. Hope the answer was helpful.

CodePudding user response：

Since you stated that it could be implemented using lodash... here code using lodash

let result = _.map(arr, (el)=> _.omit(el, skippedKeys))

CodePudding user response：

const result = arr.map(obj =>
  Object.keys(obj).reduce(
    (res, key) => (
      skippedKeys.includes(key) ? res : {...res, [key]: obj[key]}
    ),
    {},
));