> For the complete documentation index, see [llms.txt](https://developers.getgeoflow.com/geoflow-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.getgeoflow.com/geoflow-docs/advanced.md).

# Advanced

- [Code Snippets](https://developers.getgeoflow.com/geoflow-docs/advanced/code-snippets.md): Expand upon Geoflow's standard offerings with a little JavaScript.
- [Methods](https://developers.getgeoflow.com/geoflow-docs/advanced/methods.md): The following methods are made accessible anywhere on the page, through the 'geoflow' client-side JavaScript object by Geoflow.
- [run](https://developers.getgeoflow.com/geoflow-docs/advanced/methods/run.md): The primary initialization function for Geoflow is responsible for calling getData and running the script extensions (if enabled).
- [getData](https://developers.getgeoflow.com/geoflow-docs/advanced/methods/getdata.md): Fetches the visitor data properties.
- [updateData](https://developers.getgeoflow.com/geoflow-docs/advanced/methods/updatedata.md): Use this to override any visitor data property, simulating what different visitors may experience on your website.
- [displayData](https://developers.getgeoflow.com/geoflow-docs/advanced/methods/displaydata.md): Output the visitor data properties that are currently available.
- [clearData](https://developers.getgeoflow.com/geoflow-docs/advanced/methods/cleardata.md): Force clear any visitor data properties saved in the browser's session storage. This will not effect the 'geoflow' JS object.
- [checkCondition](https://developers.getgeoflow.com/geoflow-docs/advanced/methods/checkcondition.md): Returns a boolean based on the condition and value passed.
- [select](https://developers.getgeoflow.com/geoflow-docs/advanced/methods/select.md): Appends one or more \<option> elements to a \<select> element based on the category passed and an optional placeholder.
- [Callbacks](https://developers.getgeoflow.com/geoflow-docs/advanced/callbacks.md): Geoflow triggers the following callbacks and can be accessed anywhere on the page, allowing you to add custom functionality.
- [Events](https://developers.getgeoflow.com/geoflow-docs/advanced/events.md): Geoflow fires the following events on the window object and can be accessed anywhere on the page, allowing you to add custom functionality.
- [REST API](https://developers.getgeoflow.com/geoflow-docs/advanced/api.md): Geoflow offers a REST API that allows you to implement advanced functionality through your own backend or via Zapier, Make, Airtable, and more.
- [Get Visitor IP](https://developers.getgeoflow.com/geoflow-docs/advanced/api/get-visitor-ip.md)
- [Get Visitor Data](https://developers.getgeoflow.com/geoflow-docs/advanced/api/get-visitor-data.md)
- [Add Website](https://developers.getgeoflow.com/geoflow-docs/advanced/api/add-website.md)
- [Delete Website](https://developers.getgeoflow.com/geoflow-docs/advanced/api/delete-website.md)
- [Update Website](https://developers.getgeoflow.com/geoflow-docs/advanced/api/update-website.md)
- [List Websites](https://developers.getgeoflow.com/geoflow-docs/advanced/api/list-websites.md)
- [Get Website](https://developers.getgeoflow.com/geoflow-docs/advanced/api/get-website.md)