localStorage - 没有时间限制的数据存储
1 var arr=[1,2,3];
2 localStorage.setItem("temp",arr); //会返回1,2,3
3 console.log...(typeof localStorage.getItem("temp"));//string
4 console.log(localStorage.getItem("temp"));//1,2,3
localStorage.setItem...() 不会自动将Json对象转成字符串形式
1 var obj = {"a": 1,"b": 2};
2 typeof localStorage.getItem("temp2");//也会返回String...3 localStorage.setItem("temp2", obj);//但是返回[object Object]
用localStorage.setItem()正确存储JSON对象方法是:
存储前先用...:1,"b":2}
后续要操作该JSON对象,要将之前存储的JSON字符串先转成JSON对象再进行操作
1 obj=JSON.parse(localStorage.getItem("temp2"));