Accessing JSON data from Parse with Javascript

Question

I have some files up on Parse.com and want to pull them down using JSON. After I pull down the json data I wish to display this on a HTML page. One of the elements I am pulling down is nested and contains the objectID of a element I wish to make a further call to.

Here is the line I am stuck with:

        document.getElementById("subjectName").innerHTML=subject.exam.objectId;

This is setting a HTML tag to undefined. If I have a similar structure such as:

        document.getElementById("subjectName").innerHTML=subject.exam.className;

it will set the element as expected. The JSON data I am pulling down is as follows

{
"exam": {
    "__type": "Pointer",
    "className": "exam",
    "objectId": "UP7CeBZNz8"
},
"name": "Computer Architecture",
"objectId": "Pf1tKLYzjz",
"createdAt": "2014-04-24T09:22:22.732Z",
"updatedAt": "2014-04-29T16:21:40.855Z"
}

If anyone can help with this it would be much appreciated!

You're setting both to document.getElementById("subjectName"). Is that expected? — Vaishak Suresh
– Vaishak Suresh, Commented Apr 29, 2014 at 21:05
What do you see logged if you add console.log(subject) at that point in your code? — nnnnnn
– nnnnnn, Commented Apr 29, 2014 at 21:05

Vaishak Suresh · Accepted Answer · 2014-04-29 21:11:00Z

1

The problem might be because you're setting it to the same element.

if you have used

document.getElementById("subjectName").innerHTML

in both the assignments, it will not work. this works:

document.getElementById("objectId").innerHTML=subject.exam.objectId;
document.getElementById("subjectName").innerHTML=subject.exam.className;

Fiddle here

edited Apr 29, 2014 at 21:11

answered Apr 29, 2014 at 21:02

Vaishak Suresh

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1 Comment

Cen92 Over a year ago

That was not the issue. The element was under subject.exam.id rather than .objectId; I dont know why the JSON printout I have used objectId but it is working now :)

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