Use the following code to create a basic inputEx lens.
var g = new Y.inputEx.Lens({ parentEl: 'container1', fields: [ { typeInvite: 'Firstname',name: 'firstname' }, { typeInvite: 'Lastname', name: 'lastname' }, { typeInvite: 'Email', name: 'email' }, { type: 'url', name: "picUrl", typeInvite: 'url' }, { type: 'map', name: "position", width: '800px', api: 'google'} ], value: { firstname: 'Lena', email: 'lena@doe.org', picUrl: 'http://www.limsi.fr/Individu/vezien/lena.jpg', position: {"lat":48.821332549646634,"lon":1.47216796875,"nzoom":6,"uzoom":-6} }, lens: ""+ ""+ ""+ ""+ ""+ "", visus: [ null, null, { visuType: 'func', func: function(val) { return ""+val+""; } }, { visuType: 'func', func: function(val) { return ""; } }, { visuType: 'func', func: function(val) { return "lat:"+val.lat+",long:"+val.lon; } } ] });