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JavaScript selecting Object Arraylike?

The Problem is the following:
I have a JSON file that has objects with the following name: "item0": { ... }, "item1": { ... }, "item2": { ... }. But I can't access them when going through an if method.
What I've done so far:
$.getJSON('/assets/storage/items.json', function(data) {
jsonStringify = JSON.stringify(data);
jsonFile = JSON.parse(jsonStringify);
addItems();
});
var addItems = function() {
/* var declarations */
for (var i = 0; i < Object.keys(jsonFile).length; i++) {
path = 'jsonFile.item' + i;
name = path.name;
console.log(path.name);
console.log(path.type);
}
}
If I console.log path.name it returns undefined. But if I enter jsonFile.item0.name it returns the value. So how can I use the string path so that it's treated like an object, or is there an other way on how to name the json items.

As others stated 'jsonFile.item' + i is not retrieving anything from jsonFile: it is just a string.
Other issues:
It makes no sense to first stringify the data and then parse it again. That is moving back and forth to end up where you already were: data is the object you want to work with
Don't name your data jsonFile. It is an object, not JSON. JSON is text. But because of the above remark, you don't need this variable
Declare your variables with var, let or const, and avoid global variables.
Use the promise-like syntax ($.getJSON( ).then)
Iterate object properties without assuming they are called item0, item1,...
Suggested code:
$.getJSON('/assets/storage/items.json').then(function(data) {
for (const path in data) {
console.log(data[path].name, data[path].type);
}
});

What you want is to use object notation using a dynamic string value as a key instead of an object key. So, instead of using something like object.dynamicName you either have use object[dynamicName].
So in your example it would be like this.
path = 'item' + i;
jsonFile[path].name

I'm afraid you cannot expect a string to behave like an object.
What you can do is this:
path = `item${i}`
name = jsonFile[path].name

Remove element from named values in javascript

I have the following function, which is called when a google forms is submitted. I'm trying to concatenate all answers into a single array that's gonna be used latter:
function onFormSubmit(e) {
var respostas = e.namedValues;
for(item in respostas){
rp = rp.concat(respostas[item]);
}
}
But I would like to drop the timestamp that comes together with the answers. I can access it with respostas['Timestamp'], but I can't find a way to drop or ignore it. The documentation didn't help much.

var cp = [];
function onSubmitForm(e) {
var respostas = e.namedValues;
for (var name in respostas) {
if (respostas.hasOwnProperty(name) {
if (name !== 'Timestamp') {
cp.push(respostash[name]);
}
}
}
}
This is what I would suggest. Using concat to add an item is overkill, you can just push it. Also is a good practice when you are looping over object properties to make sure that they are its own properties of that object, not inherited from prototype. You can read more about it here

You can check the name of the property before concatenate it with the rest.
If the key item equals Timestamp (the undesired property) just skip the current loop.
for(item in respostas) {
if (item === 'Timestamp') {
continue;
}
rp = rp.concat(respostas[item]);
}
EDIT: Based on comments, OP attests that item in the for..in loop is a integer, but, unless his/her code differs radically from the docs, the variable should hold strings, not numbers.
var respostas = {
'First Name': ['Jane'],
'Timestamp': ['6/7/2015 20:54:13'],
'Last Name': ['Doe']
};
for(item in respostas) {
console.log(item);
}

e.namedValues returns a JSON Object with custom keys.
var jsonObj = e.namesValues;
/* e.namedValues returns data like this...
{
"test1": "testval1",
"test2": "testval2",
"test3": "testval3",
}
*/
for(item in respostas){
Logger.log(item); //Key
Logger.log(respostas[item]); //Value
}
This should let you access the key or value on the items in respostas.
The accepted answer is better as it does more to help the user to fix their exact problem, however, I will leave this here for future users in case they want to understand how to access the variables in the object that Google Apps Scripts returns.

Object.keys(data).forEach does not loop

I try to to get a value form json object.
var data={
"1":[{"departmentID":1,"departmentName":"Adminstration","branchId":1,"branchName":"ABC"}],
"2":[{"departmentID":2,"departmentName":"HR","branchId":2,"branchName":"DEF"}]
};
Object.keys(data).forEach(function(element, key, _array) {
console.log("branchId: "+element+" "+"BranchName : "+data[element][key].branchName)
for(dept of data[element]) {
console.log("Department name : "+dept.departmentName)
}
});
Here output is : the first result only and throws branchName is undefined exception.
But if the json object has multi object,its working fine.
var data={
"1":[{"departmentID":1,"departmentName":"Adminstration","branchId":1,"branchName":"ABC"}],
"2":[{"departmentID":2,"departmentName":"HR","branchId":2,"branchName":"XYZ"},
{"departmentID":3,"departmentName":"Food","branchId":2,"branchName":"XYZ"}]
}
I think, since I'm new to javascript, I couldn't solve. I tried a lot of reference to solve this problem, but I could not. Please try to solve this. Thanks in advance.

he first result only and throws branchName is undefined exception.
You need to replace
data[element][key].branchName
with
data[element][0].branchName
Because
element is the key "1",
so data[element] becomes [{"departmentID":1,"departmentName":"Adminstration","branchId":1,"branchName":"ABC"}],
data[element][0] becomes {"departmentID":1,"departmentName":"Adminstration","branchId":1,"branchName":"ABC"}
finally data[element][0].branchName is "ABC"

You have something mixed with your keys and indexes.
You can use Object.values (ES8 only) to get exact the values and left the keys part. Then iterate over them and make your strings.
const data = {
"1":[{"departmentID":1,"departmentName":"Adminstration","branchId":1,"branchName":"ABC"}],
"2":[{"departmentID":2,"departmentName":"HR","branchId":2,"branchName":"DEF"}]
}
Object.values(data).forEach(function(values) {
values.forEach(value => {
console.log(`branchId: ${value.branchId} BranchName: ${value.branchName} Department Name: ${value.departmentName}`);
});
});

Access object properties after they are assigned by another function

I'm new to Javascript, and I'm learning how to use OOP principals. I'm stuck on assigning object properties and then accessing them later.
Let's say I have this function that assigns properties to an object "Car".
function assignProps()
{
Car.size="small";
Car.cost="expensive";
}
The object Car with empty properties because they are assigned from the function.
var Car =
{
size:"",
cost:"",
returnSize: function()
{
return this.size;
},
returnCost: function()
{
return this.cost;
},
}
Now, I want to call the function that assigned the value, and then access Car's properties. I tried doing this, but it obviously failed:
function accessProps()
{
assignProps();
console.log(Car.returnSize());
console.log(Car.returnCost());
}
Any help would be appreciated. I have a feeling that this might have to do with constructors or prototypes, but since there are so many ways to create custom objects in Javascript, the documentations are very confusing.
EDIT: By "fail" I mean that it outputs the blank instead of the newly assigned value
EDIT: I tried doing it this way as well, and it yielded the same result.

You have some errors in your code:
var Car = {
size:"",
cost:""
}
And if you look at this fiddle: http://jsfiddle.net/JskBy/
It works as expected.
Full code:
function assignProps() {
Car.size="small";
Car.cost="expensive";
}
var Car ={
size:"",
cost:""
}
function accessProps(){
assignProps();
console.log(Car.size);
}
assignProps();
accessProps();

You have a syntax error on your car object initialization, should be
var Car = { size: "", cost: "" };

Line 18, column 14: Extra comma.
Line 20, column 2: Missing semicolon.
Try to get a developing tool with JSLint/JSHint built-in (e.g. Notepad++ with add-on), it might help you with debugging problems like this.

Assigning objects to keys inside a JavaScript object

I want to create an object like this:
var servers =
{
'local1' :
{
name: 'local1',
ip: '10.10.10.1'
},
'local2' :
{
name: 'local2',
ip: '10.10.10.2'
}
}
This is what I'm doing
$.each( servers, function( key, server )
{
servers[server.name] = server;
});
Where servers is an array of objects like these:
{
name: 'local1',
ip: '10.10.10.1'
}
But the code above does not assign any keys to the object, so the keys default to 0,1,2....

One potential bug I notice is that you're modifying the object that you are iterating over (servers). It might be good to create a new empty object that you modify in the loop.
Also, it'd help if you posted some sample data so we can run your code for ourselves.
Finally, you could try inserting a debugger keyword in there and stepping through the code.

In Chrome if You run this:
a = [];
b = {n:"c",i:"1.2.3.4"};
a[b.n] = b;
alert (a["c"].i);
alert (a.c.i);
You will got the "1.2.3.4" string as expected. But if you change the example as:
a = {};
b = {n:"c",i:"1.2.3.4"};
a[b.n] = b;
alert (a.c.i);
You will get the same "1.2.3.4" again :). So the answer is: your code assigns the properties to the objects as you asked. The only difference is that in the first example you used the array as object, and in second the simple object.

AFAIK [] in javascript is used to index arrays, while to access object properties you have to use dot notation. So your code should be:
$.each( servers, function( key, server )
{
var name = server.name;
eval("servers." + name + " = server");
});
Please try it out since I don't test it.