Cannot access property via dot notation javascript

Question

var obj = {a:1,b:2};
var str = "a";

console.log(obj.str);

This outputs undefined. What am i missing here ?

`obj[str]`, `.str` will try to get a property named `str` and not a property named by the string stored in `str` — Patrick Evans, May 31 '15 at 14:07

score 4 · Answer 1 · answered May 31 '15 at 14:08

4

You need to use []

var obj = {a:1,b:2};
var str = "a";

console.log(obj[str]);

answered May 31 '15 at 14:08

Rainer Plumer

1 Answers1