Creating object with dynamic key

Question

I have to create a object key based on some dynamic value . Here the value of str will from user to user. The user enters the value of str. I want to use str value entered by user to create Object.

var str = $('#inputValue');

var obj = new Object();
obj.assignment = new Object();
obj.assignment.name= "assignmentName";
obj.assignment.str = new Object();

Duplicate of ~ 1000 questions. – Christoph Dec 11 '13 at 12:31 — Christoph, Dec 11 '13 at 12:31
I am confused - what the first `str` is for? – ZenMaster Dec 11 '13 at 12:31 — ZenMaster, Dec 11 '13 at 12:31

score 4 · Accepted Answer · answered Dec 11 '13 at 12:30

4

Use the brackets syntax:

obj.assignment[str] = new Object();

Side note: you can use the shortcut {} to create new objects. For example:

obj.assignment[str] = {};

answered Dec 11 '13 at 12:30

Guilherme Sehn

6,727
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35

score 1 · Answer 2 · answered Dec 11 '13 at 12:33

1

New Object:

obj.assignment[str] = {};

answered Dec 11 '13 at 12:33

Prateek

6,785
2
24
37

Creating object with dynamic key

2 Answers2