Develop Reference

Omitting one or multiple values in javascript using lodash

I have a complex structure and I want to omit some properties from this structure for final value
let ListofWorlds = {
listOfCountries: [{
add: [{
id: 1,
updated: {
areacode: 123,
city: {
city: {'Austrailia'},
houses: {1000}
}
}
}], remove: []
}]
}
I want to omit city property from this structure and need this
let ListofWorlds = {
listOfCountries: [{
add: [{
id: 1,
updated: {
areacode: 123
}
}], remove: []
}]
}
This is what I have tried
let newListOfWorls = _.map(ListofWorlds, function (worlds) {
return _.omit(worlds, ['city']); })
Appreciate the help and knowledge

This is what i have tried.
let ListofWorlds = {
listOfCountries: [{
add: [{
id: 1,
updated: {
areacode: 123,
city: {
city: 'Austrailia',
houses: 1000
}
}
}], remove: []
}]}
const newList = ListofWorlds.listOfCountries.map(arr=>{
arr.add.forEach((item,index)=>{
arr.add[index] = _.omit(item,'updated.city')
})
return arr
})
Probably not the best way to do it, but hey it works, and why your code doesn't work probably you mapped an Object ListofWorlds and you need to be specific which field you want to be omitted

Javascript How to push item in object

var data = {items: [
{id: "1", name: "Snatch", type: "crime"}
]};
And I would like to add the mark's key.
So the result would be:
var data = {items: [
{id: "1", name: "Snatch", type: "crime", mark:"10"}
]};
How can I do ?
I tried to do data.items.push({"mark": "10"}) but it adds another object which is not what I want.
Thanks.

Access the correct index and simply set the property
data.items[0].mark = "10";

You may not need push here because you want to create a new key to n existig object. Here you need dot (.) to create a new key
var data = {
items: [{
id: "1",
name: "Snatch",
type: "crime"
}]
};
data.items[0].mark = "10";
console.log(data)

And, if you want add “mark” property to all the items:
data.items.forEach(function(item, index) {
data.items[index].mark = 10;
}

Accessing Object inside Array

I'm trying to access values inside Firebase array > object.
When I try to access values inside v-for, it works well. But I cannot do this: postDetail.author. It returns undefined. What's the solution?

Since postDetail is an array of object to access properties inside its objects, you need do something like postDetail[Index].prop
var postDetail =[{"author" : "abc", "meta" : "xyz"}];
console.log(postDetail[0].author);

If you want get only author try it:
var postDetails = [{
author: "John",
category: "Tech"
}];
var inner = postDetails.map(function(e) {
return e.autor;
});
console.log(inner);

// Array of object
var persons = [
{
name: "shubham",
age: 22,
comments: ["Good", "Awesome"]
},
{
name: "Ankit",
age: 24,
comments: ["Fine", "Decent"]
},
{
name: "Arvind",
age: 26,
comments: ["Awesome", "Handsome"]
},
{
name: "Ashwani",
age: 28,
comments: ["Very Good", "Lovely"]
}
];
var data = persons.map(person => {
console.log(person.name);
console.log(person.age);
person.comments.map((comment, index) => console.log(index + " " + comment));
});

json object from javascript nested array

I'm using a nested array with the following structure:
arr[0]["id"] = "example0";
arr[0]["name"] = "name0";
arr[1]["id"] = "example1";
arr[1]["name"] = "name1";
arr[2]["id"] = "example2";
arr[2]["name"] = "name2";
now I'm trying to get a nested Json Object from this array
arr{
{
id: example0,
name: name00,
},
{
id: example1,
name: name01,
},
{
id: example2,
name: name02,
}
}
I tought it would work with JSON.stringify(arr); but it doesen't :(
I would be really happy for a solution.
Thank you!

If you are starting out with an array that looks like this, where each subarray's first element is the id and the second element is the name:
const array = [["example0", "name00"], ["example1", "name01"], ["example2", "name02"]]
You first need to map it to an array of Objects.
const arrayOfObjects = array.map((el) => ({
id: el[0],
name: el[1]
}))
Then you can call JSON.stringify(arrayOfObjects) to get the JSON.

You need to make a valid array:
arr = [
{
id: 'example0',
name: 'name00',
},
{
id: 'example1',
name: 'name01',
},
{
id: 'example2',
name: 'name02',
}
];
console.log(JSON.stringify(arr));
Note that I am assigning the array to a variable here. Also, I use [] to create an array where your original code had {}.

Send data from one array object into another array object

I've got an Object Array:
hm.push(member.personal);
console.log("New input: " + ko.toJSON(hm));
server.insertPersonalInformacion(ko.toJS(hm));
Console.log output:
[{
"personalInfo": {},
"adresaInfo": {},
"Telefone": [{
numer1: ,
callNumb:
}],
"Mobile": [{}],
"emailAdrese": [{
email:
}]
}]
Now i would like to place this Array Object into another Object:
var insertPersonalInformacion = function(inputInfo) {
memberData.personal.forEach(function(p) {
p.personalInfo.push(inputInfo);
"And here i am lost"
);
});
});
};
This is the call object
var memberData = {
personal: [{
"personalInfo": {},
"adresaInfo": {},
"Telefone": [{
numer1: ,
callNumb:
}],
"Mobile": [{}],
"emailAdrese": [{
email:
}]
}]
};

Your exact question is not quite clear, mainly because your variable identifiers seem a bit inconsistent throughout the code snippets.
If you want to assign your array to memberData.personal, a simple assignment will do:
var memberData = {
personal: yourArray
};
To merge the existing array content of memberData.personal with your array, use Array.prototype.concat():
var memberData.personal = memberData.personal.concat(yourArray);