Develop Reference

Collect all values from the variable in JavaScript

var collectionsd returns in console log like
[5.2140564, 52.3705452]
[5.2180339, 52.3363171]
[5.2424313, 52.3595914]
[5.2739435, 52.388464]
[5.2368864, 52.336711]
In frontend shows only [5.2368864, 52.336711] I need to like below in JavaScript.
var collectionsd = [[5.2140564, 52.3705452],[5.2180339, 52.3363171],[5.2424313, 52.3595914],[5.2739435, 52.388464],[5.2368864, 52.336711]];
Update:-1
this.variables = JSON.parse(jso);
this.passing=[];
zc.passing.push(zc.variables['geo']);
console.log(zc.passing);
ouptut:-
[5.2140564, 52.3705452]
[5.2180339, 52.3363171]
[5.2424313, 52.3595914]
[5.2739435, 52.388464]
[5.2368864, 52.336711]
I need to make the zc. passing values in single array.

Yes it is possible. you can do it like this.
var fruits = [[5.2140564, 52.3705452],[5.2180339, 52.3363171]];
fruits.push([5.2424313, 52.3595914] , [5.2739435, 52.388464] ,[5.2368864, 52.336711]);
console.log(fruits);

set array as value in json format in Javascript

I want to add array as json value.
Json format is as follows.
json_data = [
'name':'Testing'
'email':'TestEmail'
'links':[
'test#test.com',
'test#test1.com',
'test#test3.com']
]
How can I set value of 'links' in javascript like that?
I did as follows.
links_array = [];
links_array =['testing','test2'];
json_data.links = links_array;
I wanted to append these two string but couldn't.
Any help would be appreciate.

Assuming that the syntax of your example is correct, you can use the "push" method for arrays.
json_data = {
'name':'Testing',
'email':'TestEmail',
'links':[]
};
json_data.links.push("test1#test.com");
json_data.links.push("test2#test.com");
json_data.links.push("test3#test.com");

You have to make little changes to make it work.
First thing, You have to replace initial square brackets with curly one. By doing this your object will become JSON Literal - a key value pair.
Second thing, You have missed commas after 'name':'Testing' and 'email':'TestEmail'
Below will work perfectly:
var json_data = {
'name':'Testing',
'email':'TestEmail',
'links':[
'test#test.com',
'test#test1.com',
'test#test3.com']
}

In addition to push as mentioned by #giovannilobitos you can use concat and do it all in one go.
var json_data = {
'name':'Testing',
'email':'TestEmail',
'links':[
'test#test.com',
'test#test1.com',
'test#test3.com'
]
};
var links_array = ['testing','test2'];
json_data.links = json_data.links.concat(links_array);
console.log(json_data.links);
On MDN's array reference you can find a more complete list of how to modify arrays in JavaScript.

Add [DataObject] to exsisting array with var key

Using Cordova, I am trying to get an Object to add to an array. I have this working on node JS using :
theData = {[varkey]:DataObject};
But I can't get this to work the same way within my javascript that cordova runs.
I need to do the following:
var TownName = 'Auckland', var townData = (JSON Data);
theArray = new Array();
theArray[TownName] = townData;
I need to be able to call it back as:
theArray['Auckland']
Which will return (JSON Data)
But it doesn't want to store the data with the key inside the array.
I have also tried:
theArray.TownName = townData;
theArray = [{TownName:townData}];
theArray = {[TownName]:townData}];
Nothing wants to store the data.
Any suggestions?
::EDIT::
data.theData =
"Auckland"[
{
"username":"pndemoname1",
"number":"373456",
"www":"http://373456.pndemoname1",
"icon":"/imgs/pndemoname1.png"
},
{
"username":"pndemoname2",
"number":"373458",
"www":"http://373458.pndemoname2",
"icon":"/imgs/pndemoname2.png"
}
data.town = "Auckland";
townData = new Array();
alert(JSON.stringify(data.theData))//Alerts theData
townData[data.town] = data.theData
alert(townData[townName]) //Alerts undefined
::EDIT2::
Re-defining the array within the function that deals with all of the data, seems to make it work.
As per my answer, the issue was that I assumed javascript vars are global.

Use objects or an array of objects.
A data structure like this:
{
town1: town1Data,
town2: town2Data,
}
Or more common:
[
{
name: "Town 1",
data: {...}
},
{
name: "Town 2",
data: {...}
},
]
For reference:
http://andrewdupont.net/2006/05/18/javascript-associative-arrays-considered-harmful/

I got what you're trying to do, to add property names dynamically to your object is first, by making sure you are using an OBJECT instead of an array, so when you want to store something you will do the following:
var _obj = {}, _something = 'xyz';
_obj[ _something ] = { ... }; // json structure
The problem you're facing is that you want to assign a string value as a key inside your array, which will not work.
However, you can still use the array you defined and do the following:
var _array = new array();
_array.push( { .... } ); // insert json structure
Remember! By using the array you will have to loop through all values every time you want to access your key, just as the best practice to avoid getting into errors.
Good luck.

The issue was that I didn't define the array within the function of where I was trying to add the information to.
I assumed the var was global (Too much PHP)

fetch data from nested JSON object in a single line

This is my JSON data ....
{"comp1":["$.Create_Keypair1_Keypair_name"]}
I want to get the value "Create_Keypair1_Keypair_name".but all the keys and values are dynamic.but the object always have single data.
I have Object.keys(temp).It shows only ["comp1"] i need
$.Create_Keypair1_Keypair_name only....

Try this:
var data = {"comp1":["$.Create_Keypair1_Keypair_name"]}
for (var key in data) {
console.log(data[key])
}
This will log $.Create_Keypair1_Keypair_name.

From what I am understanding each object will have a single value. If the is the case then you do not need the array in the object. You can do this.
var tempy = {"comp":"ksmdfnsfdnsdfn"}
Then do this to ge the value.
tempy.comp
Or if you need the keys.
Object.keys(tempy)

you might be looking for this
var temp = {"comp1":["$.Create_Keypair1_Keypair_name"]}
Object.keys(temp).forEach(function(key){
console.log(temp[key]);
});

self-reference within declaration of a structured javascript variable

Suppose I declare a structured Javascript variable like this:
var mydata = {'list':[
{'fname':'george','lname':'washington'}
,{'fname':'oscar','lname':'wilde'}
,{'fname':'james','lname':'polk'}
]
,'summary':this.list[1]['lname']
}
Question: How can I ensure that
this.list[1]['lname']
equals 'wilde' and that my "this" is actually referring
to what I intend?

You could also make this work in a function.
var mydata = {'list':[
{'fname':'george','lname':'washington'}
,{'fname':'oscar','lname':'wilde'}
,{'fname':'james','lname':'polk'}
]
,'summary':function(){return this.list[1]['lname']}
}
alert(mydata.summary());

this won't work as written, but you could do:
var mydata = {'list':[
{'fname':'george','lname':'washington'}
,{'fname':'oscar','lname':'wilde'}
,{'fname':'james','lname':'polk'}
]
}
mydata.summary = mydata.list[1]['lname'];