How to set all the values of a given property in an array at once

Question

I have this code

car = {
    "car_id": "325SDGSD-GSH4GRWW-DH534R",
    "Name": "suzuki",
    "desc": "compact machine to get your from point A to B",
    "engineSerial": "305-6467-3674",
    "Country": "Netherlands",
    "Province": "George",
    "City": "Charlie",
    "branch_timings": {
        "Monday": {
            "doorsOpen": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Tuesday": {
            "doorsOpen": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Wednesday": {
            "doorsOpen": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Thursday": {
            "doorsOpen": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Friday": {
            "doorsOpen": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Saturday": {
            "doorsOpen": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Sunday": {
            "doorsOpen": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "03:00" }
            ]
        }
    },
    "status": true,
    "specific_timings": true,
    ]
};

I want to turn all the timingsEnabled from true to false at once.

what I have tried

I found a similar thread here

The following snippet is what was in the post and it works.. I tried implementing it in my own code and it does not seem to work, I shall include a snippet with my own code below.

array1 = [{
    name : "users",
    checked : true
  }, {
    name : "active users",
    checked : false
  }, {
    name : "completions",
    checked : false
  }]

  console.log(array1.map(function(x) { 
    x.checked = true; 
    return x
  }));

car = {
"car_id": "325SDGSD-GSH4GRWW-DH534R",
"Name": "suzuki",
"desc": "compact machine to get your from point A to B",
"engineSerial": "305-6467-3674",
"Country": "Netherlands",
"Province": "George",
"City": "Charlie",
"branch_timings": {
    "Monday": {
        "doorsOpen": true,
        "timings": [
            { "timeOpen": "00:01", "timeClose": "01:00" },
            { "timeOpen": "12:00", "timeClose": "00:00" }
        ]
    },
    "Tuesday": {
        "doorsOpen": true,
        "timings": [
            { "timeOpen": "00:01", "timeClose": "01:00" },
            { "timeOpen": "12:00", "timeClose": "00:00" }
        ]
    },
    "Wednesday": {
        "doorsOpen": true,
        "timings": [
            { "timeOpen": "00:01", "timeClose": "01:00" },
            { "timeOpen": "12:00", "timeClose": "00:00" }
        ]
    },
    "Thursday": {
        "doorsOpen": true,
        "timings": [
            { "timeOpen": "00:01", "timeClose": "01:00" },
            { "timeOpen": "12:00", "timeClose": "00:00" }
        ]
    },
    "Friday": {
        "doorsOpen": true,
        "timings": [
            { "timeOpen": "00:01", "timeClose": "01:00" },
            { "timeOpen": "12:00", "timeClose": "00:00" }
        ]
    },
    "Saturday": {
        "doorsOpen": true,
        "timings": [
            { "timeOpen": "00:01", "timeClose": "01:00" },
            { "timeOpen": "12:00", "timeClose": "00:00" }
        ]
    },
    "Sunday": {
        "doorsOpen": true,
        "timings": [
            { "timeOpen": "00:01", "timeClose": "01:00" },
            { "timeOpen": "12:00", "timeClose": "03:00" }
        ]
    }
},
"status": true,
"specific_timings": true,
]
};

As you can see it gives the error that locations.map is not a function. I would appreciate some feedback on what I am doing wrong or how I can fix this

Hey, please do not completely change the title, body and topic of your question after you already received answers on it! This is *really bad style* as it leaves answers hanging in here that seem completely unrelated to the question. Please undo you latest changes and revert to the original question. After that start the current topic as a new question, but only *after* thoroughly researching that this *is* a new question and has not been asked before. The answer to the "new" question can be found here: https://stackoverflow.com/a/34087850/2610061 — Carsten Massmann, Aug 20 '20 at 04:47
I've rolled the question back; it is inappropriate and against Stack Overflow policy to change questions after getting answers. Ask a new question or read the answers on the duplicate provided by @cars10m. — Heretic Monkey, Aug 24 '20 at 12:13

score 2 · Answer 1 · answered Aug 19 '20 at 21:16

2

Try this:

for (var key in locations.branch_timings) {
        locations.branch_timings[key].timingsEnabled = false;
}

answered Aug 19 '20 at 21:16

Baruch Mashasha

951
1
11
29

how would I console.log this as logging it before a for loop doesn't work if I'm not wrong – SystematicallyWrongHa Aug 19 '20 at 21:21
Would this be possible with a while loop as well? And what would I need to console.log after that loop? I'm fairly new to JS and I'm having trouble understanding it, could you please explain? – SystematicallyWrongHa Aug 19 '20 at 21:28
@SystematicallyWrongHa Be clear, I do not understand what result you are looking for – Baruch Mashasha Aug 19 '20 at 21:30
I'm asking if your approach could be edited in such a way that instead of using the for loop or forEach, we use a while loop and also you asked me to console.log it after the for, what exactly would I be console.logging? – SystematicallyWrongHa Aug 19 '20 at 21:32
I have a restriction, I was able to do this before with forEach but I was asked to do it without for loop or forEach that is why I am unable to solve it, I do not understand how to incorporate a while loop into it – SystematicallyWrongHa Aug 19 '20 at 21:37

score 1 · Answer 2 · answered Aug 19 '20 at 21:19

1

Here's another way to accomplish this:

Object.values(locations.branch_timings).forEach(day => day.timingsEnabled = false)

answered Aug 19 '20 at 21:19

ksbrooksjr

11
3

score 1 · Answer 3 · answered Aug 19 '20 at 21:24

@Baruch Mashasha already nailed it already with his answer. But here is another way of doing it:

Object.values(locations.branch_timings).forEach(o=>
  o.timingsEnabled && (o.timingsEnabled=false));

In my version I check whether the property timingsEnabled actually exists before setting it.

locations = {
    "location_id": "325SDGSD-GSH4GRWW-DH534R",
    "Name": "Earth",
    "Address": "Milky Way Galaxy, Alpha Quadrant, near Mars",
    "Phone": "111-111-111",
    "AddressContinue": null,
    "Zip": "73463",
    "Locality": "Testing location name",
    "Country": "Netherlands",
    "Province": "George",
    "City": "Charlie",
    "Latitude": "22.22222",
    "Longitude": "11.111111",
    "enable_store_timings": true,
    "branch_timings": {
        "Monday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Tuesday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Wednesday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Thursday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Friday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Saturday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Sunday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "03:00" }
            ]
        }
    },
    "status": true,
    "specific_timings": true,
    "delivery_areas": [
        "Earth Quadrant a",
        "Earth Quadrant b",
        "Earth Quadrant c",
        "Earth Quadrant d",
        "Earth Quadrant e"
    ]
};

Object.values(locations.branch_timings).forEach(o=>o.timingsEnabled && (o.timingsEnabled=false));

console.log(locations.branch_timings);

Would this be possible with a while loop as well? for and forEach loops are kind of a no-go for me in this — SystematicallyWrongHa, Aug 19 '20 at 21:28
With respect to `while` loops, see @tevemadar's comment above. Can you explain *why* `.forEach` is a "no go" for you? — Carsten Massmann, Aug 20 '20 at 04:36

Romka · Answer 4 · 2020-08-19T21:20:03.203

0

your locations object is not an array, that's why it does not work. You want to map on the "branch_timings" property of your locations object, but it's not an array type neither. If you want to use the map() function you have to make this property an array.

edited Aug 19 '20 at 21:20

answered Aug 19 '20 at 21:07

Romka

144
8

TypeError: locations.branch_timings.map is not a function - its giving the same issue still – SystematicallyWrongHa Aug 19 '20 at 21:09
yeah it's because it's "plain" json. console.log(locations['branch_timings'].map(function(x) { x.timingsEnabled = false; return x If it's throwing same error, cast "locations['branch_timings'" as any. Or write a class (best way) – Romka Aug 19 '20 at 21:10
your location object is not a typed class object, so your environment says "the locations object has no property called branch_timings" – Romka Aug 19 '20 at 21:13
your branc_timeings object is also not an array. So you cannot use the map() function here. – Romka Aug 19 '20 at 21:14
okay thankyou! i'll try doing what you said on my end too – SystematicallyWrongHa Aug 19 '20 at 21:15
Check my answer @SystematicallyWrongHa – Baruch Mashasha Aug 19 '20 at 21:17

score 0 · Answer 5 · answered Aug 19 '20 at 21:22

branch_timings is an object, so you could iterate over its keys ("Monday", "Tuesday", etc). One approach to do this is getting the array of those keys using Object.key():

let locations = {
    "location_id": "325SDGSD-GSH4GRWW-DH534R",
    "Name": "Earth",
    "Address": "Milky Way Galaxy, Alpha Quadrant, near Mars",
    "Phone": "111-111-111",
    "AddressContinue": null,
    "Zip": "73463",
    "Locality": "Testing location name",
    "Country": "Netherlands",
    "Province": "George",
    "City": "Charlie",
    "Latitude": "22.22222",
    "Longitude": "11.111111",
    "enable_store_timings": true,
    "branch_timings": {
        "Monday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Tuesday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Wednesday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Thursday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Friday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Saturday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Sunday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "03:00" }
            ]
        }
    },
    "status": true,
    "specific_timings": true,
    "delivery_areas": [
        "Earth Quadrant a",
        "Earth Quadrant b",
        "Earth Quadrant c",
        "Earth Quadrant d",
        "Earth Quadrant e"
    ]
};

let branch_timings=locations.branch_timings;
for(let key of Object.keys(branch_timings)){
  branch_timings[key].timingsEnabled=false;
}

console.log(locations);

would there be a way to do this without using the for loop? would this be possible with a while loop as well? if so how would we go about using key in that — SystematicallyWrongHa, Aug 19 '20 at 21:25
With a `while` loop you would need to use indexes, something like `let keys=Object.keys(...); let i=0; while(i — tevemadar, Aug 19 '20 at 21:36

PeterKA · Answer 6 · 2020-08-19T23:27:37.183

Welcome to [StackOverflow](https://stackoverflow.com]! We hope you like it here.

You can focus on locations.branch_timings, extract it's keys and use them to set the required property to false forEach of the keys:

//point to branch_timings
let b = locations.branch_timings;

Object.keys(b).forEach(key => !b[key].timingsEnabled || (b[key].timingsEnabled = false));

let locations = {
    "location_id": "325SDGSD-GSH4GRWW-DH534R",
    "Name": "Earth",
    "Address": "Milky Way Galaxy, Alpha Quadrant, near Mars",
    "Phone": "111-111-111",
    "AddressContinue": null,
    "Zip": "73463",
    "Locality": "Testing location name",
    "Country": "Netherlands",
    "Province": "George",
    "City": "Charlie",
    "Latitude": "22.22222",
    "Longitude": "11.111111",
    "enable_store_timings": true,
    "branch_timings": {
        "Monday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Tuesday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Wednesday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Thursday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Friday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Saturday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Sunday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "03:00" }
            ]
        }
    },
    "status": true,
    "specific_timings": true,
    "delivery_areas": [
        "Earth Quadrant a",
        "Earth Quadrant b",
        "Earth Quadrant c",
        "Earth Quadrant d",
        "Earth Quadrant e"
    ]
};

//point to branch_timings
let b = locations.branch_timings;

Object.keys(b).forEach(key => !b[key].timingsEnabled || (b[key].timingsEnabled = false));

console.log( locations );

Alternatively, you can use a for of loop on the values (as opposed to keys) of locations.branch_timings as follows:

for( let a of Object.values(locations.branch_timings) ) {
    !a.timingsEnabled || (a.timingsEnabled = false);
}

let locations = {
    "location_id": "325SDGSD-GSH4GRWW-DH534R",
    "Name": "Earth",
    "Address": "Milky Way Galaxy, Alpha Quadrant, near Mars",
    "Phone": "111-111-111",
    "AddressContinue": null,
    "Zip": "73463",
    "Locality": "Testing location name",
    "Country": "Netherlands",
    "Province": "George",
    "City": "Charlie",
    "Latitude": "22.22222",
    "Longitude": "11.111111",
    "enable_store_timings": true,
    "branch_timings": {
        "Monday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Tuesday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Wednesday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Thursday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Friday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Saturday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "00:00" }
            ]
        },
        "Sunday": {
            "timingsEnabled": true,
            "timings": [
                { "timeOpen": "00:01", "timeClose": "01:00" },
                { "timeOpen": "12:00", "timeClose": "03:00" }
            ]
        }
    },
    "status": true,
    "specific_timings": true,
    "delivery_areas": [
        "Earth Quadrant a",
        "Earth Quadrant b",
        "Earth Quadrant c",
        "Earth Quadrant d",
        "Earth Quadrant e"
    ]
};

for( let a of Object.values(locations.branch_timings) ) {
    !a.timingsEnabled || (a.timingsEnabled = false);
}

console.log( locations );

Thank you for your response, would this be possible with a while loop as well? I have a restriction of not using for or forEach — SystematicallyWrongHa, Aug 19 '20 at 22:55
sorry for getting back late, I tried googling how to do it but I couldn't find anything. Going to continue looking. — SystematicallyWrongHa, Aug 20 '20 at 00:31
Did you say `while` loop? I though you said just loop. Why would you want to use a while loop in a case like this, if you really know who while works? ... Did you just change the question on us? — PeterKA, Aug 20 '20 at 01:26

How to set all the values of a given property in an array at once

6 Answers6