Javascript, why doesn't it work?

[esther]

var data = "{ posX: 384, posY: 128 }";
endPos = JSON.parse(data);

console.log(endPos.posX);
console.log(endPos.posY);

It doesn't work.

[emerson]

Incorrect rubber. JSON.parse() has strict entry rules. With that line, it's going to be great.

var data = '{"posX": 384, "posY": 128}';