Dropdown Component

A quick dropdown system to be used with Material Design Lite.

WARNING: This is still very early.

Usage

To install the component

1. Reference src/dropdown.js in your markup so it will be included as a script.
2. Build MDL's Sass and add src/dropdown.scss after the rest of MDL.

Within your page

1. Code an anchor to be the trigger for the dropdown. Give it the component-js-dropdown class to setup the dropdown menu. Also provided is a dropdown-navigation__header class that styles it like a normal menu item.

    <a class="dropdown-navigation__header component-js-dropdown" title="Gaming">
        Gaming
    </a>

2. Add the arrow icons within the header. These will be displayed so users know the dropdown's state.

    <a class="dropdown-navigation__header component-js-dropdown" title="Gaming">
        Gaming
        <span class="material-icons dropdown-inactive">arrow_drop_down</span>
        <span class="material-icons dropdown-active ">arrow_drop_up</span>
    </a>

3. The next child in the DOM should be menu this trigger will target. This element contains the anchors for the menu.

<div class="dropdown-navigation__menu">
    <a class="mdl-navigation__link" href="gaming/mtg" title="Magic: The Gathering">Magic: the Gathering</a>
    <a class="mdl-navigation__link" href="gaming/dnd" title="Dungeons & Dragons">Dungeons & Dragons</a>
</div>

Final code:

<a class="dropdown-navigation__header component-js-dropdown" title="Gaming">Gaming</a>
<div class="dropdown-navigation__menu">
    <a class="mdl-navigation__link" href="gaming/mtg" title="Magic: The Gathering">Magic: the Gathering</a>
    <a class="mdl-navigation__link" href="gaming/dnd" title="Dungeons & Dragons">Dungeons & Dragons</a>
</div>