This plugin for Kirby 2 is no longer maintained.
This field is based on the core select field and adds a filter and placeholder functionality. It uses the select2 jQuery plugin.
When displaying the images of a page with options: images it will display thumbs automatically.
Simply put the quickselect folder into your site/plugins folder.
featured:
label: Image
type: quickselect
options: images
placeholder: Choose an image...
Just like you do with the regular select field, you can specify what elements should be listed. pages, children, files, images, .... Even a more complex query or options from another field.
Anything that's printed in the list can be searched for. So if you set the text of a query to {{title}} ({{uri}}), you can find pages by their ancestors, too.
Compared to the core select field, you can also define a placeholder that can make things clearer for the editor.