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How to get keys from json object in javascript [closed]

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I have a json file:
[
{
"name": "Cocktail 1",
"ingredients": {
"rum": 12,
"coke": 48
}
}, {
"name": "Cocktail 2",
"ingredients": {
"gin": 24,
"tonic": 60
}
}]
Now I want to get a list of the keys of each "name" object. At the end there should be ths list
var mydata[0] = rum
var mydata[1] = coke
var mydata[2] = gin
var mydata[3] = tonic
and save it into an array.
What i have tried
var mydata = JSON.parse("jsonstring").ingredients;
hope this is understanable?

for each data in the array (map)
you want the ingredient part (.ingredients),
extract the keys (Object.keys)
and flatten the array (.flat())
array.map(a => a.ingredients).map(a => Object.keys(a)).flat();
You may prefer loop style. the only difference is flattening occurs with ... operator.
var results = [];
for (let a of array) {
results.push(...Object.keys(a.ingredients))
}

My proposition is :
'use strict'
const array = [
{
"name": "Cocktail 1",
"ingredients": {
"rum": 12,
"coke": 48
}
},
{
"name": "Cocktail 2",
"ingredients": {
"gin": 24,
"tonic": 60
}
}
]
const mydata = array.map((val) => {
return Object.keys(val.ingredients);
}).flat();
console.log(mydata)
// expected output: Array ["rum", "coke", "gin", "tonic"]
// Now you can get :
var mydata[0] = rum
var mydata[1] = coke
var mydata[2] = gin
var mydata[3] = tonic
Hope that help you? Thank

Restructure data from array with javascript [closed]

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I hope it is not a stupid question. My array looks like this:
const data = [
{
pollType: "1",
pollName: "Can you help me?",
options: [
{ Options: "Yes, I can", PID: "oFnxh-NDdcP" },
{ Options: "No way!", PID: "d9A10-omlUd" }
]
}
];
But I need to have it:
const result = [
{
pollType: "1",
pollName: "Can you help me?",
option1: "Yes, I can",
pid1: "oFnxh-NDdcP",
option2: "No way!",
pid2: "d9A10-omlUd"
}
];
Please don't get angry if it is so simple to do. I highly appreciate your help and if you do a an example so myself and other people can find it very useful in a future...

var orig = [{"pollType":"1","pollName":"Can you help me?","options":[{"Options":"Yes, I can","PID":"oFnxh-NDdcP"},{"Options":"No way!","PID":"d9A10-omlUd"}]}]
var newArr = [];
orig.forEach(v => {
var newObj = {};
newObj.pollType = v.pollType;
newObj.pollName = v.pollName;
v.options.forEach((k, i) => {
newObj["options" + (i + 1)] = k.Options;
newObj["pid" + (i + 1)] = k.PID;
});
newArr.push(newObj);
});
console.log(newArr);

JSON Object to Arrays [closed]

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Below JSON Object needs to be iterated and need result as below.
[
{"Aazam":1, "Jagannath":2, "Bharath Kumar M":4 },
{"Bharath Kumar M":1, "Syad":1 },
{"Bharath Kumar M":2 }
]
output needed (can be in map):
Aazam: 1
Jagannath: 2
Bharath Kumar M: 4, 1, 2
Syad: 1
I tried with ES 6 syntax, I am able to get key and values but I am not successful in forming the array as needed.
Solution should be generic.

You can have a object as a output with the unique keys and values for each key as an array that holds the values of all similar keys.
var arr = [{
"Aazam": 1,
"Jagannath": 2,
"Bharath Kumar M": 4
},
{
"Bharath Kumar M": 1,
"Syad": 1
},
{
"Bharath Kumar M": 2
}
];
var res = arr.reduce((acc, item) => {
var keys = Object.keys(item);
keys.forEach((key) => {
if (!acc[key]) {
acc[key] = [];
}
acc[key].push(item[key]);
});
return acc;
}, {});
console.log(res);

Iterate json data in javascript [closed]

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Following JSON data comes from php,
I have tried following code. But console displays undefined error.
jQuery.each(result.address, function(obj) {
console.log(obj.city);
});
EDIT : Also it's not working and throwing undefined error.
jQuery.each(result.address, function(obj) {
console.log(obj[0].city);
});
It is working : console.log(result.address.address1.city);. But in this case address1 is not fixed. eg. result.address.xyz.city, result.address.abc.city

You're calling city on each address, while cities are inside addressX inside address. Try:
jQuery.each(result.address, function(key, val) {
console.log(val.city);
});
jsfiddle DEMO

Maybe in this way:
for (i = 0; i < result.address.length; i++) {
console.log(result.address[i].city);
}
I'm not sure if jquery.each works in this case.
I hope it helps.

Javascript
var dictionary = {
"12Jan2013": [{
"id": "0",
"name": "ABC"
}, {
"id": "1",
"name": "DEF"
}],
"13Jan2013": [{
"id": "0",
"name": "PQR"
}, {
"id": "1",
"name": "xyz"
}]
};
for (var i in dictionary) {
dictionary[i].forEach(function(elem, index) {
console.log(elem, index);
});
}
Output
Object {id: "0", name: "ABC"} 0
Object {id: "1", name: "DEF"} 1
Object {id: "0", name: "PQR"} 0
Object {id: "1", name: "xyz"} 1

call javascript object properties [closed]

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This is probably a very easy question but let's say I have a php json_encoded javascript object of this form:
var js_objet = {
"1": {
"Users": {
"id": "14",
"name": "Peter"
},
"Children": [
{
id: 17,
name: "Paul"
},
{
id: 18,
name: "Mathew"
}
]
}
}
What is the synthax to get the name of the child with id 18 (Mathew) for example from that Object?
Thank you

Here's such a custom function as mentioned earlier.
function getChildrenById(id){
for (var child in js_objet[1].Children){
if(id == js_objet[1].Children[child].id){
return js_objet[1].Children[child].name;
}
}
return false;
}
running getChildrenById(18) would return "Mathew"
Hope that helps,
R.

You can do it like this:
var name = js_objet["1"].Children[1].name;
JSFiddle available here

This is how I would approach this problem:
var id = 18;
var name = '';
var jsObjIndex = "1";
var jsObjAttr = "Children"
for (var i = 0; i < js_objet[jsObjIndex][jsObjAttr].length; i++)
{
if (js_objet[jsObjIndex][jsObjAttr][i].id == id)
{
name = js_objet[jsObjIndex][jsObjAttr][i].name;
break;
}
}
You are basically performing a linear search on every element of jsObjIndex.Children. There are likely better solutions however :).

This really is a comment, but I don't have enough reputation (but it's relevant as I recently encountered the same issue): This would probably be easier to do if you can change the JSON format to use the ID as the key for each child object:
var js_objet = {
"1": {
"Users": {
"id": "14",
"name": "Peter"
},
"Children": {
"17":{
"name": "Paul"
},
"18":{
"name": "Mathew"
}
}
}
}
Then you can simply call it using
js_objet[1].Children[18].name;
This is assuming each ID is unique.