How to convert a object string into an object

Question

I am trying to convert a JavaScript string into a workable JavaScript object without using the eval(). For example, convert a string like this:

beforeMagic="{{height: { type: String, default: \"auto\", realType: \"cssHeight\", required: false }, title: { type: String, required: true}}"

to

afterMagic= { height: { type: String, default: "auto", realType: "cssHeight", required: false }, title: { type: String, required: true } }

Where does the string come from? If there’s an option to make it valid JSON, then parsing it as JSON is trivial. How is the `type` property used? — Sebastian Simon, Aug 18 '21 at 18:18
What is `type: String` supposed to mean? `String` is not a valid literal, it would need to be quoted. — Barmar, Aug 18 '21 at 18:19
Without quotes, it's a variable (it's the built-in String class). Do you want the value of the variable put into the object? — Barmar, Aug 18 '21 at 18:20
You can use `eval()` to parse it, but this is dangerous if the source is not trusted. — Barmar, Aug 18 '21 at 18:20
The short answer, ignoring invalid input (`{{` and `}}`), and overlooking the unquoted text, is https://stackoverflow.com/questions/45015/safely-turning-a-json-string-into-an-object — erik258, Aug 18 '21 at 18:21

score 4 · Accepted Answer · answered Aug 18 '21 at 18:39

4

To Deserialize a JSON into a JavaScript object, here you can use a common method JSON.parse() method.

var obj = JSON.parse(your-string);

answered Aug 18 '21 at 18:39

H.S

1

The problem of using this is that the string is not correctly formatted for using JSON.parse(). – AlexSp3 Aug 18 '21 at 18:41
I can't parse it since there are no double quotes around the object property – Sostene MUNEZERO BAGIRA Aug 18 '21 at 19:05
Then I think you should manipulate string before convert into an object, so please use some string operations to make it familiar for JSON.parse. – H.S Aug 18 '21 at 19:12

1 Answers1