How to construct an array of objects programmatically

Question

I want to construct an array of objects programmatically. The end result I am expecting is this

[{"nickname":"xxx"},{"nickname":"yyy"},{"nickname":"zzz"}]

This is my code

@tagged_user_array = []
//pingUsers is the array which stored the list or nicknames 'xxx', 'yyy' and 'zzz'
$.each @pingUsers, (index, nick) =>
   @tagged_user_array.push(nick)

With my code above, I am unable to get my expected result. What do I need to modify in order to get my expected result?

mu is too short · Accepted Answer · 2012-05-17 17:36:30Z

2

Since you're using CoffeeScript and loops are expressions in CoffeeScript, you could use a comprehension instead:

pingUsers = ["xxx", "yyy", "zzz"]
tagged_user_array = ({nickname: value} for value in pingUsers)

Demo: http://jsfiddle.net/ambiguous/w4ugV/1/

edited May 17, 2012 at 17:36

answered May 17, 2012 at 15:43

mu is too short

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1 Comment

Larry Maccherone Over a year ago

super small tweak... remove the semi-colon. :-)

Rory McCrossan · Accepted Answer · 2012-05-17 08:55:28Z

1

Try this:

var pingUsers = ["xxx", "yyy", "zzz"];
var tagged_user_array = [];

$.each(pingUsers, function(index, value)  {
    tagged_user_array.push({ "nickname" : value });
});

Example fiddle

I'm not sure why you have prefixed your variables with @ as this is invalid in javascript.

answered May 17, 2012 at 8:55

Rory McCrossan

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1 Comment

mu is too short Over a year ago

The @s, lack of parentheses, lack of var, and (...) => indicate CoffeeScript.

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