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Remove JSON Root

I have the following line in a JavaScript variable:

my_Variable = "{"Domini":[{"cod_domini":"1","nom_domini":"Sant Esteve de Palautordera"},{"cod_domini":"2","nom_domini":"Parc Natural del Montseny"},{"cod_domini":"5","nom_domini":"Sant Pere de Vilamajor"},{"cod_domini":"6","nom_domini":"Santa Maria i Mosqueroles"}]}"

I need to remove the root at the top of the Domini string so that the resulting string looks like this:

 my_Variable = [{"cod_domini":"1","nom_domini":"Sant Esteve de Palautordera"},{"cod_domini":"2","nom_domini":"Parc Natural del Montseny"},{"cod_domini":"5","nom_domini":"Sant Pere de Vilamajor"},{"cod_domini":"6","nom_domini":"Santa Maria i Mosqueroles"}]

I tried JSON.parse() JSON into an object using the JSON.parse() function, and it works, but then I don’t know how to extract the data and process it to create a new JSON without root.

Should I use some kind of loop?

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4 answers

It's simple:

 my_Variable = my_Variable.Domini;

After parsing JSON.

So, the code will look like this:

 my_Variable = "{"Domini":[{"cod_domini":"1","nom_domini":"Sant Esteve de Palautordera"},{"cod_domini":"2","nom_domini":"Parc Natural del Montseny"},{"cod_domini":"5","nom_domini":"Sant Pere de Vilamajor"},{"cod_domini":"6","nom_domini":"Santa Maria i Mosqueroles"}]}"; my_Variable = JSON.parse( my_Variable ); my_Variable = my_Variable.Domini; console.log( my_Variable ); // [{"cod_domini":"1","nom_domini": ...
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 var obj = JSON.parse(json); obj = [Object.keys(obj)[0]]; var newJson = JSON.stringify(obj);

or by avoiding ES5 features like Object.keys:

 var obj = JSON.parse(json); for (var key in obj) { if (!Object.prototype.hasOwnProperty.call(obj, key)) continue; obj = obj[key]; break; } var newJson = JSON.stringify(obj);
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Given that you want to return to the line after deleting the key.

 my_Variable = JSON.stringify(JSON.parse(my_Variable).Domini);

Structure

 JSON.parse(my_Variable)

Parses a string into a JSON object.

 JSON.parse(my_Variable).Domini

Gets the value of the Domini property.

 JSON.stringify(JSON.parse(my_Variable).Domini)

Encodes it back to a string.

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If you want your variable to go through, do the following (you mentioned that you already did this, but I added it for completeness)

 var parsedJson = JSON.parse(my_Variable);

when you disassemble it, follow these steps:

 var JsonWithoutDominiAsRoot = parsedJson.Domini;

You can "." your path through the various attributes of your new json object. Domini was just one of them.

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