var names = [];
names[0] = prompt("New member name?");
localStorage.setItem("names", JSON.stringify(names));
//...
var storedNames = JSON.parse(localStorage.getItem("names"));
// our array
var movies = ["Reservoir Dogs", "Pulp Fiction", "Jackie Brown",
"Kill Bill", "Death Proof", "Inglourious Basterds"];
// storing our array as a string
localStorage.setItem("quentinTarantino", JSON.stringify(movies));
// retrieving our data and converting it back into an array
var retrievedData = localStorage.getItem("quentinTarantino");
var movies2 = JSON.parse(retrievedData);
//making sure it still is an array
alert(movies2.length);