1 2<!--- 3 4This README is automatically generated from the comments in these files: 5iron-dropdown.html 6 7Edit those files, and our readme bot will duplicate them over here! 8Edit this file, and the bot will squash your changes :) 9 10The bot does some handling of markdown. Please file a bug if it does the wrong 11thing! https://github.com/PolymerLabs/tedium/issues 12 13--> 14 15[](https://travis-ci.org/PolymerElements/iron-dropdown) 16 17_[Demo and API docs](https://elements.polymer-project.org/elements/iron-dropdown)_ 18 19 20##<iron-dropdown> 21 22`<iron-dropdown>` is a generalized element that is useful when you have 23hidden content (`.dropdown-content`) that is revealed due to some change in 24state that should cause it to do so. 25 26Note that this is a low-level element intended to be used as part of other 27composite elements that cause dropdowns to be revealed. 28 29Examples of elements that might be implemented using an `iron-dropdown` 30include comboboxes, menubuttons, selects. The list goes on. 31 32The `<iron-dropdown>` element exposes attributes that allow the position 33of the `.dropdown-content` relative to the `.dropdown-trigger` to be 34configured. 35 36```html 37<iron-dropdown horizontal-align="right" vertical-align="top"> 38 <div class="dropdown-content">Hello!</div> 39</iron-dropdown> 40``` 41 42In the above example, the `<div>` with class `.dropdown-content` will be 43hidden until the dropdown element has `opened` set to true, or when the `open` 44method is called on the element. 45 46 47
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