Era Material: JSON - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse

era-material-json.js

var json1 = '{"enable": true, "emotion": ":)"}';
var json2 = '{"enable": "false", "emotion": ":)"}';

var obj1 = JSON.parse(json1);
var obj2 = JSON.parse(json2);

console.log(obj1.enable);
console.log(obj1.emotion);

console.log(obj2.enable);
console.log(obj2.emotion);

if (obj1.enable ? true : false) {
  console.log("object 1 true" + " " + obj1.emotion);
} else {
  console.log("object 1 false" + " " + ":(");
}

if (obj2.enable == "true" ? true : false) {
  console.log("object 2 true" + " " + obj2.emotion);
} else {
  console.log("object 2 false" + " " + ":(");
}

// output

/*

> true
> ":)"
> "false"
> ":)"
> "object 1 true :)"
> "object 2 false :("

*/