Convert an object with key values to an array of objects with said key name and values

Question

I'm getting my head stuck in a twist with this one...

I'm trying to convert my req.query I get in Express which is an object to make an array of objects so I can pass these through to SQL Server as inputs for stored procedures.

This is the data I have -

{ param1: 'testing123', param2: 'poooool', param300: 'nnnvncn' }

I want it to appear like

[{param1: 'testing123'},{param2: 'poooool'},{param300: 'nnnvncn'}]

Any idea how I would get to the desired array above?

EDIT: This is the code I went for in the end running in node.js

app.get('/:client/storedproc/:sp', function(req, resp){
    var sp = req.params.sp;
    var obj = req.query;
    var test = function(){ return Object.keys(obj).map(k => ({ [k]: obj[k] }));}
    var arr = test();
    console.log(arr)
});

Re your edit: I would double check this actually works. I'm not sure if Node natively supports all the fancy ES2015 stuff. — user1726343
– user1726343, Commented Aug 14, 2016 at 7:05

user1726343 · Accepted Answer · 2016-08-14 06:49:34Z

1

You can use Object.keys for this. Given the object from your first snippet o:

return Object.keys(o).map(function(k) {
    var x = {};
    x[k] = o[k];
    return x;
});

Just for fun, here's how terse it is with ES2015:

return Object.keys(o).map(k => ({ [k]: o[k] }));

answered Aug 14, 2016 at 6:49

user1726343

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3 Comments

Adam91Holt Over a year ago

Damn that ES2015 is beautiful - I need to start learning so much more JS :) Thanks Asad - I will update my post above with what I went for in the end.

user1726343 Over a year ago

@Adam91Holt And that actually works in Node JS without a transpiler?

user1726343 Over a year ago

@Adam91Holt Btw, you don't need to create a separate test function there since you're closing over o anyway. Just do var arr = Object.keys(obj).map(k => ({ [k]: obj[k] }));

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