javascript - Get some information on a string with split and substring -

i have information of latitude , longitude string filepos. have put information array(called beaches), must be:

var beaches = [                   ["45.411158", "11.906326", 1]// 1 index                   ["45.411190", "11.906324", 2]// 2 index               ] 

i tried that, eclipse show me error:

"uncaught typeerror: cannot read property 'length' of undefined"

var filepos = "{'data':'17/02/2015', 'descrizione':'prova aaa', 'lat':'45.411158', 'lng':'11.906326', 'foto':'sdjahvas'}" +             "{'data':'18/02/2015', 'descrizione':'prova baa', 'lat':'45.411190', 'lng':'11.906324', 'foto':'asde'}";  var beaches = filepos.split("}") // break original string on `", "` .map(function(element, index){     var temp = element.split(', ');     lat = temp[2].substr(7, temp[2].length -2);     lng = temp[3].substr(7, temp[3].length -2);     return [lat, lng, index + 1]; });   console.log(beaches); alert(json.stringify(beaches)); 

if change object string valid json , parse it, can iterate on object.

var jsonstring = filepos.replace(/\'/g, '"').split('}'),     positionary; jsonstring.pop(); positionary = json.parse('[' + jsonstring.join('},') + '}]'); beaches = positionary.map(function (obj) {     return [obj.lat, obj.lng]; });