JSON is an actively used meta language created in 2001. In computing, JavaScript Object Notation or JSON ( JAY-sən), is an open-standard file format that uses human-readable text to transmit data objects consisting of attribute–value pairs and array data types (or any other serializable value). It is a very common data format used for asynchronous browser–server communication, including as a replacement for XML in some AJAX-style systems. JSON is a language-independent data format. Read more on Wikipedia...

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Example code from Linguist:

{
        "id": 1,
        "name": "Foo",
        "price": 123,
        "tags": ["Bar","Eek"],
        "stock": { "warehouse":300, "retail":20 }
}

Example code from Wikipedia:

var y = {a: undefined};
 var ys = JSON.stringify(y,
  function (k, v){return (v === undefined) ? "UNDEFINED" : v});

Last updated July 22nd, 2019