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## Get Json
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### Instructions
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In this exercise, we will focus on building complex async flows with promises.
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Create a `getJSON` function that takes 2 parameters:
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- `path`, that will be the url called by your function
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- `params` _optional_, that will be the search parameters appended to your url
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`getJSON` must construct a valid url with the `path` and stringified `params`
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and call `fetch` with it.
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If the response is not ok, your function must throw an error using
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the response status message.
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The response body must then be read and parsed from json.
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The parsed object contains one of those 2 properties:
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- `"data"` the actual data to return
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- `"error"` the error message to throw
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### Notions
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- [nan-academy.github.io/js-training/examples/promise.js](https://nan-academy.github.io/js-training/examples/promise.js)
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- [devdocs.io/dom/fetch_api/using_fetch](https://devdocs.io/dom/fetch_api/using_fetch)
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- [devdocs.io/dom/urlsearchparams](https://devdocs.io/dom/urlsearchparams)
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- [devdocs.io/javascript/global_objects/json](https://devdocs.io/javascript/global_objects/json)
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