--- layout: "docs_api" version: "unstable" versionHref: "/docs/unstable" path: "api/directive/ngKeydown/" title: "ng-keydown" header_sub_title: "Directive in module scripts" doc: "ngKeydown" docType: "directive" ---
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ng-keydown

Specify custom behavior on keydown event on a fa-surface.

Usage

```html ```

API

Attr Type Details
ngKeydown expression

Expression to evaluate upon keydown. (Event object is available as $event and can be interrogated for keyCode, altKey, etc.)

Example

{% assign lvl = page.url | append:'X' | split:'/' | size %} {% capture relative %}{% for i in (3..lvl) %}../{% endfor %}{% endcapture %}

  Edit in Plunker 
{% raw %} <fa-surface ng-keydown="count = count + 1" ng-init="count=0">
  key down count: {{count}}
</fa-surface>{% endraw %}