how to change object name dynamically in javascript? [duplicate]

Question

var person1 = {
    firstName : "John",
    lastName  : "Doe",
    age       : 50,
    eyeColor  : "blue"
};

lot of object are there like above. i have tried get the object like below but not working.

var id = "1";

person+id.firstName + " is " + person+id.age + " years old.";

please guide me.

Its not very clear what you are asking, can you explain in more detail? — SPlatten
– SPlatten, Commented May 6, 2016 at 9:54
Very bad duplicated refferences. I had an example just for your case, but now it's impossible to answer. — Marcos Pérez Gude
– Marcos Pérez Gude, Commented May 6, 2016 at 9:55
i have javascript objects like person1, person2 ... each object some properties are there — Prasad Bezawada
– Prasad Bezawada, Commented May 6, 2016 at 9:56
get the object name dynamically with concat with number like person+1.fistname but result not came wihtout concat result will coming — Prasad Bezawada
– Prasad Bezawada, Commented May 6, 2016 at 9:57
person1.firstName + " is " + person1.age + " years old."; it is working fine. my requirement is var id = "1"; person+id.firstName; person+id.age; it is not working — Prasad Bezawada
– Prasad Bezawada, Commented May 6, 2016 at 9:59

Pranav C Balan · Accepted Answer · 2016-05-06 10:32:28Z

1

If it's in global context then you can get it from window object

var person1 = {
  firstName: "John",
  lastName: "Doe",
  age: 50,
  eyeColor: "blue"
};

var id = "1";

document.write(window["person" + id].firstName + " is " + window["person" + id].age + " years old.");

edited May 6, 2016 at 10:32

answered May 6, 2016 at 9:54

Pranav C Balan

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1 Comment

Pranav C Balan Over a year ago

@PrasadBezawada : glad to help

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