> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

# Method name: env()

# Method package: wixWindowFrontend

# Method menu location: wixWindowFrontend --> Rendering --> env

# Method Link: https://dev.wix.com/docs/velo/apis/wix-window-frontend/rendering/env.md

# Method Description:

Gets the current environment the rendering process is running in.

When possible, the rendering process is split in 2 in order to
 improve performance. The first cycle in the process happens in the server-side code
 and the second cycle happens in the client-side code. If not possible on the server-side, all rendering
 happens client-side.

 The `env` property returns `"backend"` when rendering on the server
 and `"browser"` when rendering on the client.

 Use the `env` property in the page's `onReady()`
 event to control where your code runs during the rendering
 process and to prevent code that causes side effects from running twice.

 > **Note:** Rendering never occurs server-side when previewing a site.



# Method Code Examples:

*** Note: do not assume any prop names or enum values other than the ones in the example.

## Use the Rendering API to avoid inserting an item twice

```javascript
import wixData from 'wix-data';
import wixWindowFrontend from 'wix-window-frontend';

let toInsert = {
  "field1": "Some value",
  "field2": "Some other value"
};

$w.onReady(function () {
  if (wixWindowFrontend.rendering.env === "browser") {
    return wixData.insert("myCollection", toInsert)
      .then( (item) => {
        $w("#myText").text = item.title;
      } );
  }
} );

```

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