handl_keydown_event_using_jquery.js

function startListeningKeyDownEvent(){
	$(window).keydown(function(e){
	  // put the keycode pressed to console
		console.log(e.keyCode);
		// if it's Enter key, trigger click event on mic button
		if( e.keyCode + '' === '13' ){
			$('button[mic-id="all"]').trigger('click')
		}
		return false;
	});
}

$(document).ready(()=>{ // or onDeviceReady for cordova
  startListeningKeyDownEvent();
}