Format/covert JS object string to valid JSON format

Question

Given a STRING (not object) that represents JS object.

'{a: {b: 1}}' (not object but string)

Is there some simple general way to convert it to JSON {"a": {"b": 1}}? Maybe parse and covert, as JSON.parse is not applicable.

Answer 1

If you have no other content than this, you could take eval with parentheses around to prevent that it is interpreted as a block statement with labels.

Maybe worth a look:

• When is JavaScript's eval() not evil?

var string = '{a: {b: 1}}',
    object = eval(`(${string})`);

console.log(object);

Answer 2

Try this:

var string = '{a: {b: 1}}';
eval('var obj='+string);
console.log(obj.a);