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Highcharts data from a variable is not working but from works fine from an array

I am very new to JavaScript and Highcharts so thank you in advance. I am trying to create a simple chart using Highcharts. When I manuayy create the variable using this array the chart works:
let result = [1084.58,1084.65,1084.64]
However, when when I grab the data from JSON and put that into the variable the chart does not show the data. If I "alert" the variable that is created from the JSON is appears like this:
1084.58,1084.65,1084.64
I am guessing the format of the data from the JSON is not correct. What should I do to correct it?
When I use the manually created variable the chart appears correctly. When I create the variable from the JSON file the chart appears and the X axis has the correct labels but no data in the chart.
I did some testing and found what I think is the issue. The variable that is created from the JSON has quotes around each entry. How can I remove the quotes?
['1084.58', '1084.65', '1084.64']

You'll probably need to convert those values to Number type (using Number() or parseFloat()), you can do something like this:
variable => contains ['1084.58', '1084.65', '1084.64']
variable = variable.map(number => {return Number(number)})
Since you're new to Javascript (Welcome to this language!), I'm gonna explain how it works.
"map" is an array method which takes each element of an array and returns an value (simillar to forEach method, but forEach doesn't return anything). So when using map to return each element of an array like this you're pushing the new element to the new array, it will be something like
variable.map(number => {return Number(number)})
On the 1st element:
It returns Number('1084.58'), then it returns 1084.58 (number type)
On the 2nd element:
It returns Number('1084.65'), then it returns 1084.65 (number type)
On the 3rd element:
It returns Number('1084.64'), then it returns 1084.64 (number type)
Each return into this new variable is like an array.push(element)
Hope you got the idea

How can I treat an imported value like an array?

I'm trying to generate a google form that has a few hundred options in a drop down.
I have all the name values in a single cell formatted as follows:
'user1','user2','user3'
It is set as in the code as follows:
var studentNames = SpreadsheetApp.openById('REDACTED').getSheetByName('Student List').getRange(3,3).getValues();
When I use this variable as shown below it treats it all as a singe value instead of an array.
.setChoiceValues([studentNames])
Any help in where to go from here?

is it a string of words with single quotes and a comma to separate them? if so, you can just do a split on the comma
var s = data
var arr = s.split(",");
and now you will have an array of strings. not sure if this answers your question.

Thanks everyone for getting me pointed in the right direction.
Turns out split was just part of the answer, I had to turn it into a string first.
.toString().split(",");

getValues() returns an object, so you need to interact with it to get the string of values for your array.
Given you are selecting just one cell and so don't need to iterate through the object, try something like this:
var studentNamesObj = SpreadsheetApp.openById('REDACTED').getSheetByName('Student List').getRange(3,3).getValues();
var studentNames = studentNamesObj[0][0].split(",");

Get field value from mongoDB and assign to a var gives undefined

I am using MeteorJS and trying to get the value of a field from MongoDB and assign to a variable. But when want to print to console, it gives all the time 'undefined'. It works fine in HTML template, but i need to store the value in a var in .js file.
var num = ButtonsList.find({_id:'ZcLkjSwNGTpgHkoeq'});
var n = num.button1;
console.log("button number is: "+n);
The code below works fine by the way, if i want them to output in the browser. It outputs the buttons numbers in html using {{}} namespace. But as I said, i need to store the values in variables.
ButtonsList = new Meteor.Collection('list');
Template.theList.helpers({
'buttons': function(){
//return ButtonsList.find().fetch();
return ButtonsList.find('ZcLkjSwNGTpgHkoeq');
}
});

ButtonsList.find() returns a cursor.
ButtonsList.find().fetch() returns an array of buttons.
ButtonsList.findOne() returns will return a single button.
ButtonsList.findOne().fieldName will return the field fieldName of the button that was found.
The reason it works with the {{#each}} template block helper is that each blocks know how to iterate over cursors.

Your using Find , doesnt that mean your getting multiple reccords back? Shouldnt you be using FindOne instead? otherwise youll get an array of objects which means youd have to use num[i].button1 to get to the value.

How do I use #DbLookup results to populate a Readers field in xpages?

db = new Array("myserver", "myfolder\\mydb.nsf")
dir = getComponent("Dir").value;
div = getComponent("Div").value;
lu = #DbLookup(db, "ManagerAccess", dir + "PP" + div, "DTManagers");
var a = [];
a.push(lu);
var item:NotesItem = docBackEnd.replaceItemValue('FormReaders', #Unique(a));
item.setReaders(true);
That code is on the querySaveDocument ssjs. The result I get from the #DbLookup (when I put in a computed field) look like this:
Pedro Martinez,Manny Ramirez,David Ortiz,Terry Francona
I tried doing an #Explode(#Implode) thing on it, but it doesn't seem to work.
The error I get in the browser just tells me that the replaceItemValue line is broken.
To test it, I pushed several strings one at a time, and it worked correctly populating my FormReaders field with the multiple entries.
What am I doing wrong?

I see several problems here:
A. In cases as described by you #Dblookup in fact would return an array. If you push an array into a plain computedField control it will exactly look as that you wrote:
value1, value2, ..., valueN
A computedField doesn't know anything about multiple values etc, it just can display strings, or data that can be converted to strings.
If you want to test the return value you could try to return something like lu[0]; you then should receive the array's 1st element, or a runtime error, if lu is NOT an array. Or you could ask for the array's size using lu.length. That returns the number of array elements, or the number of characters if it's just a plain string.
B. your code contains these two lines:
var a = [];
a.push(lu);
By that you create an empty array, then push lu[] to the first element of a[]. The result is something like this:
a[0] = [value1, value2, ..., valueN],
i.e. a is an array where the first element contains another array. Since you don't want that, just use #Unique(lu) in your replaceItemValue-method.
C. I don't see why replaceItemValue would throw an error here, apart from what I wrote in topic B. Give it a try by writing lu directly to the item (first without #Unique). That should work.
D. for completeness: in the first line you used "new Array". A much better way to define your db parameters is
var db = ["myserver", "myfolder/mydb.nsf"];
(see Tim Tripcony's comment in your recent question, or see his blog entry at http://www.timtripcony.com/blog.nsf/d6plinks/TTRY-9AN5ZK)

How to append values to the custom data stored in an element

Let's say I want to store some custom value in a element, I would need:
$('div').data('k','v');
But now I need to add more data to that element: v2.
The only way I could come up with is to somehow store or reference the previous data, and append to it, but it doesn't look like the best way to do it nor the most efficient:
$('div').data('k','v');
var prevData = $('div').data('k');
$('div').data('k',prevData + ',v2');
alert($('div').data('k'));
This will alert v,v2 as it should, but is this the correct approach?

You can use lists as data attributes:
$('.selector').data('test', []);
var list = $('.selector').data('test');
list.push('foo')
It's pretty useful, also because you can fill data- attributes with JSON in the HTML at page generation time, and .data() will automatically convert them to normal JS objects.

if you are using array as data atribute, you can do this
$('.selector').data('list', []);
$('.selector').data('list').push(1);
$('.selector').data('list').push(2);
$('.selector').data('list'); // Will return [1,2]