存储:
var arr = [1,2,3];
var str = JSON.stringify(arr);
localStorage.setItem("items", str);
读取:
var items = localStorage.getItem("items");
var arr = JSON.parse(items);
var arr = [1,2,3];
var str = JSON.stringify(arr);
localStorage.setItem("items", str);
var items = localStorage.getItem("items");
var arr = JSON.parse(items);