I exptect that mandrill_events only contains one object. How do I access its event-property?
var req = { mandrill_events: '[{"event":"inbound","ts":1426249238}]' }
7 Answers
var req = { mandrill_events: '[{"event":"inbound","ts":1426249238}]' }
console.log(Object.keys(req)[0]);
Make any Object array (req), then simply do Object.keys(req)[0] to pick the first key in the Object array.
4 Comments
Leigh
While answers are always welcome, including a brief explanation of how the code solves the problem is more helpful to others. It also reduces the likelihood the post will end up in the "Very-Low-Quality" queue (as this one did).
Bagzli
Your answer helped me out, but one thing that should be noted is that
Object.keys(req)[0] will return you the id of the object in that array, so to get the actual value you need: mandrill_events[Object.keys(req)[0]].event
themhz
and how do I get the value using this code?
Anuga
event and ts?To answer your titular question, you use [0] to access the first element, but as it stands mandrill_events contains a string not an array, so mandrill_events[0] will just get you the first character, '['.
So either correct your source to:
var req = { mandrill_events: [{"event":"inbound","ts":1426249238}] };
and then req.mandrill_events[0], or if you're stuck with it being a string, parse the JSON the string contains:
var req = { mandrill_events: '[{"event":"inbound","ts":1426249238}]' };
var mandrill_events = JSON.parse(req.mandrill_events);
var result = mandrill_events[0];
1 Comment
Maksim Luzik
Thanks for pointing out that
[ is returned as content if the variable is string, not objectI'll explain this with a general example:
var obj = { name: "John", age: 30, city: "New York" };
var result = obj[Object.keys(obj)[0]];
The result variable will have the value "John"
Comments
the event property seems to be string first you have to parse it to json :
var req = { mandrill_events: '[{"event":"inbound","ts":1426249238}]' };
var event = JSON.parse(req.mandrill_events);
var ts = event[0].ts
Comments
'[{"event":"inbound","ts":1426249238}]' is a string, you cannot access any properties there. You will have to parse it to an object, with JSON.parse() and then handle it like a normal object
answered Mar 13, 2015 at 12:44
Dimitris Karagiannis
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Comments
After you parse it with Javascript, try this:
mandrill_events[0].event
Comments
Assuming thant the content of mandrill_events is an object (not a string), you can also use shift() function:
var req = { mandrill_events: [{"event":"inbound","ts":1426249238}] };
var event-property = req.mandrill_events.shift().event;
JSON.parse(str).JSON.parse(req[mandrill_events])[0].eventwill return"inbound".JSON.parse(req.mandrill_events)[0]["event"]would