modified array of object property then pass to front end

Question

I'm using node (express) and want to add a new property before my response (in here I named it as result) get passed to the front-end.

async.parallel(stack, function (err,result) {
  result.users[0].price = 100
  // console.log(result.users[0]); // I couldn't find price property here I wonder why.
  res.json(result);
});

Why is this so?

I tried to alter the other property like password:

console.log(delete result.users[0].password);
console.log(result.users[0]) // password is still present here?

I tried a mini example in fiddle it worked. https://jsfiddle.net/16333z15/

what does the returned result look like? have you logged that? — Bennett Adams
– Bennett Adams, Commented Oct 16, 2016 at 13:38
And what's async.parallel doing here, what exactly is asynchronous, and where are you trying to use it ? — adeneo
– adeneo, Commented Oct 16, 2016 at 14:01
Too complicated for me, looks like you're using MongoDB and doing some async calls to the DB, but I really don't understand how passing the enitre stack object to async.parallel(stack... would work ? — adeneo
– adeneo, Commented Oct 16, 2016 at 14:13

Jared Chu · Accepted Answer · 2016-10-16 14:02:59Z

0

router.get('/json', function (req, res) {
    var result = {
        users: [{
            id: 1,
            name: "abc"
        }]
    };
    result.users[0].price = 100;
    res.json(result);
});

I have tried this in express and it's worked. You should check the result type, I think it's not tuple.

answered Oct 16, 2016 at 14:02

Jared Chu

2,8624 gold badges30 silver badges41 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Jessica Illy Over a year ago

I found the problem is using async, damn it this npm behave strangely, it doesn't give me the power to alter the response.

Collectives™ on Stack Overflow

modified array of object property then pass to front end

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related