Develop Reference

Remove array of object if object inside is empty

I am preparing an array like this
datas[5] = { "qty_sized": "1", "resolution": "5", "status": "", "order": 1342 };
where [5] is dynamic from response.
I have and object mydata and inside that I have a object items.
I push array to object items, with assign
Object.assign(mydatadata.items, datas);
Now mydata.items has an array set,
`
items{
1 {qty_auth: "", resolution: "4", status: "", order: "1495"},
5 {qty_sized: "1", resolution: "4", status: "", order: "1485"}
}`
Now if qty_auth: "" , from which i need to check if qty_ is empty then remove the array . So expected output is something like this:
Note: qty_ is dynamic here.
items{ 5 {qty_sized: "1", resolution: "4", status: "", order: "1485"} }
and i want to result inside same object mydata.items
I tried something like this
const mydatadata.items = mydata.items.filter((o) =>
Object.keys(o).some((k) => k.startsWith("qty") && o[k])
);
console.log(result);
but its now giving me any output

Using Object#entries, get the key-value pairs of items
Using Array#filter, iterate over the above array
In each iteration, check if the current item has a key starting with qty_ whose value is not empty. You can do this using Object#keys, Array#some, and String#startsWith.
Using Object#fromEntries, convert the filtered pairs to an object again.
const obj = {
items: {
1: {qty_auth: "", resolution: "4", status: "", order: "1495"},
5: {qty_sized: "1", resolution: "4", status: "", order: "1485"}
}
};
obj.items = Object.fromEntries(
Object.entries(obj.items)
.filter(([_, item]) =>
Object.keys(item).some(key => key.startsWith('qty_') && item[key])
)
);
console.log(obj);

You're talking about an array, but using curly brackets instead of square brackets. For filter() to work it would have to look like:
mydata = {
items: [
{qty_auth: "", resolution: "4", status: "", order: "1495"},
{qty_sized: "1", resolution: "4", status: "", order: "1485"}
]
}
Assuming it is an actual array there's still a problem with "const mydatadata.items", or at least it throws an error for me because mydatadata is not initialized. Unless it's a typo and it should be mydata, but then you'd be redeclaring it. So depending on what you want:
mydata.items = mydata.items.filter((o) =>
Object.keys(o).some((k) => k.startsWith("qty") && o[k])
);
or
let mydatadata = {};
mydatadata.items = mydata.items.filter((o) =>
Object.keys(o).some((k) => k.startsWith("qty") && o[k])
);
Furthermore you're storing the result in mydatadata but you're logging the variable result.
So depending on the previous answer:
console.log(mydatadata);
or
console.log(mydata);
Here's a fiddle: https://jsfiddle.net/b57qa82d/

You should probably just be using an array rather than an object. It's not really clear from your question what structure you need as you keep changing the terminology to describe your data. For example: "Now mydata.items has an array set" but your code says that it should be object with keys, not an array.
So I suggest: get your data in an array, and filter it by iterating over each object's entries and checking to see if any of the keys starting with "qty" has a value that isn't an empty string. You can then assign that filtered array to myObject.items.
const data = [
{ "qty_sized": "0", "resolution": "5", "status": "", "order": 2 },
{ "qty_auth": "", "resolution": "5", "status": "", "order": 3 },
{ "qty_auth": "1", "resolution": "5", "status": "", "order": 1342 },
{ "qty_sized": "", "resolution": "2", "status": "", "order": 1 },
{ "qty_sized": "1", "resolution": "1", "status": "", "order": 142 }];
const filtered = data.filter(obj => {
return Object.entries(obj).find(([key, value]) => {
return key.startsWith('qty') && value;
});
});
const myObject = { items: filtered };
console.log(myObject);
Additional documentation
Object.entries
find

Property assignment expected when using template literals to create an Object

I am trying to create an object inside a JSON object that will be later populated from FormData:
function toJSONstring(form) {
let object = {`"${form.name}": {}`}; //Property assignment expected.ts(1136)
let formData = new FormData(form);
formData.forEach((value, key) => {
// Reflect.has in favor of: object.hasOwnProperty(key)
if (!Reflect.has(object, key)) {
object[key] = value;
return;
}
if (!Array.isArray(object[key])) {
object[key] = [object[key]];
}
object[key].push(value);
});
form.reset();
return JSON.stringify(object);
}
What I want to obtain is the following JSON:
{
"network_settings": {
"connection": "wifi",
"type": "dhcp",
"ssid": "Jorj_2.4",
"ip_address": "",
"gateway": "",
"subnet": "",
"dns": ""
}
}
but I get Property assignment expected.ts(1136).
If I replace
let object = {`"${form.name}": {}`};
with let object = {}; then I get a normal JSON object:
{
"connection": "wifi",
"type": "dhcp",
"ssid": "Jorj_2.4",
"ip_address": "",
"gateway": "",
"subnet": "",
"dns": ""
}
How can I created the nested object that I want ?

For dynamic keys in script you have to enclose your expression inside []
const form = {
name: 'network_settings'
}
let obj = {[form.name]: {}};
console.log(obj);

Go back to what you had first:
let object = {};
And after you have populated the object, wrap it using computed property name syntax:
return JSON.stringify({ [form.name]: object });

Modify Object literal data and wrap it in the array

I have an object literal or like a json file which has data in it, what I want is to wrap the SMBPremium and MAX data inside an array so that I can target by accessing its index. How Can I modify my object literal to an array so that I can target SMBPremium and MAX. Kinda like this.
productMap['TEC0'][1].productName;
This is my json
var productMap = {
"TEC0": {
"SMBPremium" : {
"productName": "Wilson",
"panelClass": "WilsonClass",
"fullinfoClass": "Wilsonfull",
"productPageLink": "",
"panelPageLinkGA": "",
"fullPageLinkGA": "",
"notifLinkDanger" : {
"linkPrimary" : "",
"linkSecondary" : ""
},
"notifLinkRed" : {
"linkPrimary" : "",
"linkSecondary" : ""
},
"notifLinkInfo" : "",
"notifLinkWarning" : "",
"notifLinkSuccess" : ""
},
"MAX": {
"productName": "Spalding",
"panelClass": "spalding",
"fullinfoClass": "spalding",
"productPageLink": "",
"panelPageLinkGA": "",
"fullPageLinkGA": "",
"notifLinkDanger" : {
"linkPrimary" : "",
"linkSecondary" : ""
},
"notifLinkRed" : {
"linkPrimary" : "",
"linkSecondary" : ""
},
"notifLinkInfo" : "",
"notifLinkWarning" : "",
"notifLinkSuccess" : ""
}
}
};

Tranform with array.map:
productMap2 = {};
productMap2.TEC0 = Object.keys(productMap['TEC0']).map(key => productMap['TEC0'][key]);
Then you can access productName property for each element:
productMap2.TEC0[1].productName

You can recreate the object productMap formatted like you wish:
// Every object is a map:
var tec0 = productMap['TEC0'];
var keys = Object.keys(tec0);
var array = [];
for(var i=0; i<keys.length; i++) {
var key = keys[i];
var value = tec0[key];
array.push(value);
}
var newProductMap = {'TEC0': array};
alert(newProductMap['TEC0'][1].productName);
NOTE: Faly's answer is far more elegant. Just be carefull at browser compatibility with arrow functions (IE does not support for example).
Idem for Ammar's answer, not supported by IE.

Use Object.values() method:
productMap["TEC0"] = Object.values(productMap["TEC0"]);

try this
index = 1
productMap['TEC0'][Object.keys(productMap['TEC0'])[index]].productName;
Explanation
productMap['TEC0'] is an json object
Object.keys(productMap['TEC0']) - will return json object keys as array.
in this example like this ["SMBPremium", "MAX"]
Object.keys(productMap['TEC0'])[index] - will return key name based
on index passed.
productMap['TEC0'][key_name] - will fetch json object based
key_name got from previous state.

You could map the items to an index of the wanted keys array.
var productMap = { TEC0: { SMBPremium: { productName: "Wilson", panelClass: "WilsonClass", fullinfoClass: "Wilsonfull", productPageLink: "", panelPageLinkGA: "", fullPageLinkGA: "", notifLinkDanger: { linkPrimary: "", linkSecondary: "" }, notifLinkRed: { linkPrimary: "", linkSecondary: "" }, notifLinkInfo: "", notifLinkWarning: "", notifLinkSuccess: "" }, MAX: { productName: "Spalding", panelClass: "spalding", fullinfoClass: "spalding", productPageLink: "", panelPageLinkGA: "", fullPageLinkGA: "", notifLinkDanger: { linkPrimary: "", linkSecondary: "" }, notifLinkRed: { linkPrimary: "", linkSecondary: "" }, notifLinkInfo: "", notifLinkWarning: "", notifLinkSuccess: "" } } },
keys = ['SMBPremium', 'MAX'];
keys.forEach((k, i) => productMap.TEC0[i] = productMap.TEC0[k]);
console.log(productMap['TEC0'][0].productName);

create array from json

I'm receiving this JSON below
{
"category": "test",
"sealing_temp_1": "",
"sealing_temp_2": "",
"sealing_temp_3": "",
"level_sensor_1": "",
"level_sensor_2": "",
"level_sensor_3": "",
"check_pack_1": "",
"check_pack_2": "",
"check_pack_3": "",
"comment": ""
}
and I would like to turn it to this structure and save
{
"category": "test",
"sealing_temp": "['a', 'b', 'c']",
"level_sensor": "['x', 'y', 'z']",
"check_pack": "[1, 2, 3]",
"comment": ""
}
Can someone guide me, I tried to use a for..in but got lost in the process

You could split the key and if it has digits at the end in it, then use it for an array to fill.
This proposal change the object and deletes unwanted properties which values are now in an array collected.
var object = { category: "test", sealing_temp_1: "s1", sealing_temp_2: "s2", sealing_temp_3: "s3", level_sensor_1: "l1", level_sensor_2: "l2", level_sensor_3: "l3", check_pack_1: "c1", check_pack_2: "c2", check_pack_3: "c3", comment: "cc" };
Object.keys(object).forEach(function (k) {
var parts = k.split(/_(?=\d+$)/);
if (parts.length === 2) {
object[parts[0]] = object[parts[0]] || [];
object[parts[0]][parts[1] - 1] = object[k]; // subtract one for zero based array
delete object[k];
}
});
console.log(object);
.as-console-wrapper { max-height: 100% !important; top: 0; }

Iterate through the child objects and get all the values with javascript

var formmd = {
"frmType": "Registration",
"frmStage": "step1-complete",
"formattr": {
"SystemUser": {
"LoginName": "A#test.com",
"Password": "password",
"PIN": "",
"IsTestUser": false
},
"ConsumerAddress": {
"AddressLine1": "201 MOUNT Road",
"AddressLine2": null,
"AddressTypeId": "1",
"City": "OLA TRAP",
"State": "NM",
"Zipcode": "60005"
},
"ConsumerPhone": {
"PhoneTypeId": 6,
"PhoneNumber": "9876543210",
"PrimaryPhoneIndicator": null,
"AllowVoicemail": false
},
"PhysicianSpecialty": {
"SpecialtyList": [
"1",
"2"
]
},
}
}
I'm trying to fetch all the values of the child objects under formattr but I'm unable to iterate inside the child objects. The following is the script I tried.
My Result should be
"A#test.com"
"password"
"PIN": ""
False
201 MOUNT Road"
The script I tried is
function walk(formmd) {
var obj1 = formmd.formattr;
for(var key in obj1){
if (obj1.hasOwnProperty(key)) {
var val1 = obj1[key];
if(val1.hasOwnProperty(key)){
for(var key in val1){
var val2 =val1[key];
console.log("val2");
}
}
}
}
}
How to access the keys of child objects in an automated way?

Try like this
for (var key in formmd) {
var val1 = formmd[key];
if (key=="formattr") {
for (var key1 in val1) {
var val2 = val1[key1];
for(var key2 in val2)
console.log(val2[key2]);
}
}
}
DEMO

You might find it easier to understand code written in a functional style. This is one solution, which I'll explain:
Object.values(formmd.formattr)
.map(obj => Object.values(obj))
.reduce((acc, vals) => acc.concat(vals), [])
The first expression Object.values(formmd.formattr) gives you an array of all the values (not keys) under formmd.formattr. Something like:
[{"LoginName": "A#test.com", "Password": "password", …}, {"AddressLine1": "201 MOUNT Road", "AddressLine2": null, …}, …]
Since you want the values within each of these sub-objects the next line .map(obj => Object.values(obj)) will do just that. It returns a new array where each object in the input array is transformed through Object.values(…). It returns something like:
[["A#test.com", "password", "", false], ["201 MOUNT Road", null, "1", …], …]
This array has all the data you're after, but in nested arrays, so it needs to be flattened with .reduce((acc, vals) => acc.concat(vals), []). This reduce will successively concat these sub-arrays to produce a single array like:
["A#test.com", "password", "", false, "201 MOUNT Road", null, "1", …]
which contains all the values of the child objects under formattr.
Here's some other ways to do it:
Object.values(formmd.formattr)
.reduce((acc, x) => acc.concat(Object.values(x)), [])
or
[].concat(...
Object.values(formmd.formattr)
.map(obj => Object.values(obj)))

You will have to use Object.entries()
The Object.entries() method returns an array of a given object's own
enumerable string-keyed property [key, value] pairs, in the same order
as that provided by a for...in loop. (The only important difference is
that a for...in loop enumerates properties in the prototype chain as
well).
Example -
for (const [key, value] of Object.entries(objectName)) {
console.log(`${key}: ${value}`);
}
Code Snippet -
var formmd = {
"frmType": "Registration",
"frmStage": "step1-complete",
"formattr": {
"SystemUser": {
"LoginName": "A#test.com",
"Password": "password",
"PIN": "",
"IsTestUser": false
},
"ConsumerAddress": {
"AddressLine1": "201 MOUNT Road",
"AddressLine2": null,
"AddressTypeId": "1",
"City": "OLA TRAP",
"State": "NM",
"Zipcode": "60005"
},
"ConsumerPhone": {
"PhoneTypeId": 6,
"PhoneNumber": "9876543210",
"PrimaryPhoneIndicator": null,
"AllowVoicemail": false
},
"PhysicianSpecialty": {
"SpecialtyList": [
"1",
"2"
]
},
}
}
for (const [key, value] of Object.entries(formmd.formattr)) {
console.log('Value',value);
}