How can I open rear camera in mobile device using webcam.js?
var constraints = { video: true, facingMode: "environment"};
<script src="/js/webcamjs/webcam.js"></script><div id="my_camera" style="width:320px; height:240px;"></div><div id="my_result"></div><script language="JavaScript"> Webcam.set('constraints',{ facingMode: "environment" }); Webcam.attach( '#my_camera' ); function take_snapshot() { Webcam.snap( function(data_uri) { document.getElementById('my_result').innerHTML = '<img src="'+data_uri+'"/>'; } ); }</script><a href="javascript:void(take_snapshot())">Take Snapshot</a>