JSON is a data notation created in 2001 by Douglas Crockford.
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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...
{ "hello": "world" }
{
"id": 1,
"name": "Foo",
"price": 123,
"tags": ["Bar","Eek"],
"stock": { "warehouse":300, "retail":20 }
}var y = {a: undefined};
var ys = JSON.stringify(y,
function (k, v){return (v === undefined) ? "UNDEFINED" : v});| Feature | Supported | Token | Example |
|---|---|---|---|
| Lists | ✓ | [1, 2, 3] |
|
| Maps | ✓ | {"name": "Mary"} |
|
| Strings | ✓ | "hello world" |
|
| Integers | ✓ | 80766866 |
|
| Floats | ✓ | 2.3 |
|
| Booleans | ✓ | false |
|
| Case Insensitive Identifiers | X | ||
| Semantic Indentation | X | ||
| Multiline Strings | X | ||
| File Imports | X | ||
| MultiLine Comments | X | ||
| Ternary operators | X | ||
| Conditionals | X | ||
| Line Comments | X | ||
| Macros | X | ||
| Comments | X | ||
| Disk Output | X |