array to json javascript

gistfile1.js

var myarray = [];
var myJSON = "";
$.each(data.data,function(i,val) {
    var item = {
            "name": val.name,
            "facebookId": val.id,
            "picture": val.picture.data.url
        };
    myarray.push(item);
})
myJSON = JSON.stringify(myarray);