Using the array of objects structure below, I need a means of scanning all object elements within this array, i.e. Monday through to Sunday and where the following criteria is met, reset that `weeklyFlag` to false, i.e.:

```
weeklyFlag is true 
weeklyStartTime is null
weeklyEndTime is null

```

then reset `weeklyFlag to false`

So using the above criteria for below example, anywhere where the above criteria is met, I need to reset that specific array object's `weeklyFlag` to false.

So this would mean for Monday, Tuesday's `startEnd[1]` index and Saturday.

```
let weeklyTimes = [
                    {
                        "day": "Monday",
                        "startEnd": [
                            {
                                "weeklyFlag": true,
                                "weeklyStartTime": null,
                                "weeklyEndTime": null
                            }
                        ]
                    },
                    {
                        "day": "Tuesday",
                        "startEnd": [
                            {
                                "weeklyFlag": true,
                                "weeklyStartTime": "2021-08-08T14:00:00.000Z",
                                "weeklyEndTime": "2021-08-08T15:00:00.000Z"
                            },
                            {
                                "weeklyFlag": true,
                                "weeklyStartTime": null,
                                "weeklyEndTime": null
                            }
                        ]
                    },
                    {
                        "day": "Wednesday",
                        "startEnd": [
                            {
                                "weeklyFlag": false,
                                "weeklyStartTime": null,
                                "weeklyEndTime": null
                            }
                        ]
                    },
                    {
                        "day": "Thursday",
                        "startEnd": [
                            {
                                "weeklyFlag": true,
                                "weeklyStartTime": "2021-08-08T14:00:00.000Z",
                                "weeklyEndTime": "2021-08-08T15:00:00.000Z"
                            },
                            {
                                "weeklyFlag": true,
                                "weeklyStartTime": "2021-08-08T14:00:00.000Z",
                                "weeklyEndTime": "2021-08-08T15:00:00.000Z"
                            }
                        ]
                    },
                    {
                        "day": "Friday",
                        "startEnd": [
                            {
                                "weeklyFlag": false,
                                "weeklyStartTime": null,
                                "weeklyEndTime": null
                            }
                        ]
                    },
                    {
                        "day": "Saturday",
                        "startEnd": [
                            {
                                "weeklyFlag": true,
                                "weeklyStartTime": null,
                                "weeklyEndTime": null
                            }
                        ]
                    },
                    {
                        "day": "Sunday",
                        "startEnd": [
                            {
                                "weeklyFlag": false,
                                "weeklyStartTime": null,
                                "weeklyEndTime": null
                            }
                        ]
                    }
];

```

I was looking at nested for loops but unsure if array map or filter can be used?