How to convert a String that looks like JSON or a JS object, to an actual JS object?

Question

The String I am talking about was initially a part of a JS object like:

var nameVal = "Jacob";
var favNumbersVal =  "{\"firstNum\":0, \"secondNum\":1, \"thirdNum\":2}";

var aJSObject = {
    "name" = nameVal,
    "favNumbers" = favNumbersVal
};

The variable I am interested in is favNumbersVal. Please notice that the starting and ending " around the value of favNumbersVal are the normal double quotes we put around a String whenever we define a String.

The format of the value of favNumbersVal is coming from a library dynamically.

The question is that how do I convert the value of favNumbersVal to a JS object, so that when I later convert sJSObject to JSON using JSON.stringify(), the value of aJSObject becomes a JSON object, and the value of favNumbers becomes a JSON object nested inside the aforementioned JSON object.

Answer 1

Using JSON.parse():

var favNumbersVal =  "{\"firstNum\":0, \"secondNum\":1, \"thirdNum\":2}";
console.log(JSON.parse(favNumbersVal));