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Co-Authored-By: kotte <14197736+mrtamagotchi@users.noreply.github.com> Co-Authored-By: mikaeltellhed <2311083+mikaeltellhed@users.noreply.github.com> Co-Authored-By: Tore Knudsen <18231882+torekndsn@users.noreply.github.com> Co-Authored-By: Michael Cartner <32543275+michaelcartner@users.noreply.github.com>
55 lines
2.3 KiB
Markdown
55 lines
2.3 KiB
Markdown
---
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title: Javascript in Cloud Functions
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hide_title: true
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---
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# Javascript in Cloud Functions
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Not all nodes are available to cloud functions but in terms of writing Javascript the **Function** and **Expression** nodes are available. However there are some caveats, most notably when deployed cloud functions are not running in a browser they are running in the cloud and they have a much more limited runtime environment. This means that you cannot access most of the browser APIs, the cloud runtime is limited to:
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- **Core Javascript Objects and Functions** The Javascript language contains a set of core objects and functions that are all available to the cloud runtime. More info [here](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects).
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- **The Noodl API** A subset of the Noodl API is available to cloud functions. Read more about the Noodl APIs [here](/javascript/overview). Some of the functions and objects are labeled **Only available on the frontend** and some are labeled as **Only available in cloud functions**, the rest are shared between frontend and cloud functions.
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## Fetch
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A subset of the **Fetch API** available on the browser also works in cloud functions, which is very useful for making HTTP requests to external services.
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**`fetch(url,options)`**
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The **Fetch API** first takes the endpoint of the HTTP request and then an object with options. Here are a few examples, first making a simple POST request to an endpoint:
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```javascript
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const res = await fetch("https://some-endpoint",{
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method:'POST',
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headers:{
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'content-type':'application/json'
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},
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body:JSON.stringify({
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someParameters:"hello"
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})
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})
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if(res.ok) {
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Outputs.Success()
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}
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else Outputs.Failure()
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```
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## The Request Object
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In Javascript in your cloud functions you can access the request object containing data on the current request being handled.
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```javascript
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const request = Noodl.Objects.Request;
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request.UserId // Contains the user if of the user that called the cloud function, if authenticated
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request.Authenticated // Will be true if this call is authenticated
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request.Parameters // An object with the parameters of the current cloud function request
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request.Headers // An object with the HTTP headers of the current cloud function request
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```
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