CODEWITHSUNDEEP
javascriptjson
thatkidrich
thatkidrich

Reputation: 21

I want to display data out of JSON

If I had a JSON object formatted like this:

{ 
    "CampaignID":5918,
    "CampaignFolder":"http://www.Dan.com/campaign/5918-18D/",
    "TargetUser.CampaignID":5918,
    "TargetUser.GUID":"3dbe24a8-a3e3-4de9-86ab-4940c8e148cc",
}

Once I grab the object and I want to display an alert with a property, I can use alert(CampaignID) and it correctly displays 5918. But if I try alert(TargetUser.CampaignID) it fails. Any ideas?

Upvotes: 1

Views: 43

Answers (2)

A l w a y s S u n n y
A l w a y s S u n n y

Reputation: 38552

There are two ways to access properties of object in js

  1. Dot notation and

  2. Bracket notation.

With Dot notation - 

property must be a valid JavaScript identifier. For example, 
object.$1 is valid, while object.1 is not.

With Bracket notation - 

property_name is a string or Symbol. It does not have to be a 
valid identifier; it can have any value, including 1foo, !bar!, or 
even " " (a space) or a . (dot character)

See MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Property_accessors

Upvotes: 0

gabriel.hayes
gabriel.hayes

Reputation: 2313

The way the object is structured, you're going to need to use bracket notation to access those fields. The object key is "TargetUser.CampaignID" but the JS you're using: TargetUser.CampaignID means access the object TargetUser and access its property CampaignID when really you just want "TargetUser.CampaignID" as a string key.

Try something like this

var data = { 
    "CampaignID":5918,
    "CampaignFolder":"http://www.Dan.com/campaign/5918-18D/",
    "TargetUser.CampaignID":5918,
    "TargetUser.GUID":"3dbe24a8-a3e3-4de9-86ab-4940c8e148cc",
};
alert(data["TargetUser.CampaignID"]);
alert(data["TargetUser.GUID"]);
// data["TargetUser.CampaignID"] is NOT data.TargetUser.CampaignID
// that would look like this: {TargetUser: {CampaignID: 0}}
// not {"TargetUser.CampaignID": 0}

:

Upvotes: 1

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