|  | <!DOCTYPE html> | 
|  | <html> | 
|  | <head> | 
|  | <meta charset='utf-8'/> | 
|  | <title>Vibration API: test a simple scalar parameter to vibrate()</title> | 
|  | <link rel='author' title='Robin Berjon' href='mailto:robin@berjon.com'/> | 
|  | <link rel='help' href='http://www.w3.org/TR/vibration/#methods'/> | 
|  | <meta name='flags' content='dom, interact'/> | 
|  | </head> | 
|  | <body> | 
|  | <h1>Description</h1> | 
|  | <p> | 
|  | After hitting the button below, your device must vibrate continuously for about two seconds, once. | 
|  | </p> | 
|  | <button id='vib'>Vibrate!</button> | 
|  | <script src='/common/vendor-prefix.js' data-prefixed-objects='[{"ancestors":["navigator"], "name":"vibrate"}]'></script> | 
|  | <script> | 
|  | if (undefined !== navigator.vibrate) { | 
|  | document.getElementById("vib").onclick = function () { | 
|  | navigator.vibrate(2000); | 
|  | }; | 
|  | } | 
|  | </script> | 
|  | </body> | 
|  | </html> |