access nested property using bracket notation [duplicate]

Question

Says I have var input = {'name':'john'}

I do input['name'] = 'James'

it become var input = {'name':'john'} but can I pass value with dot to access nested property?

Like

var input = {"name":"john","grades":"{english:"A","math":"C"}"}

I can't change the math value by doing input["grades.math"].

No. You can do input["grades]["math"]" You can have properties with special characters that cannot be defined using dot notation. So you will have to use bracket notation — Rajesh Dixit
– Rajesh Dixit, Commented Mar 7, 2017 at 6:25
Possible Duplicate: stackoverflow.com/questions/11922383/… — Rajesh Dixit
– Rajesh Dixit, Commented Mar 7, 2017 at 6:29

Ngoan Tran · Accepted Answer · 2017-03-07 06:28:07Z

24

You can access that value by these ways:

var input = {"name":"john","grades":{"english":"A","math":"C"}}

console.log(input["grades"]["math"]);
console.log(input.grades.math);
console.log(input["grades"].math);
console.log(input.grades["math"]);

answered Mar 7, 2017 at 6:28

Ngoan Tran

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1 Comment

Forage Feb 26 at 15:06

Thus, to clarify, it's not possible in the way he's after.

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