是否可以像在 Javascript 对象中一样在 localStorage 中存储整数值并在不进行类型转换的情况下提取它？
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Is it possible to store integer value in localStorage like in Javascript objects and extract it without typecasting?
提问by nickalchemist
When I assign integer value to localStorage item
当我为 localStorage 项目分配整数值时
localStorage.setItem('a',1)
and check its type
并检查其类型
typeof(localStorage.a)
"string"
it returns string, I can typecast it to intfor my use
它返回string，我可以将它类型转换为int供我使用
parseInt(localStorage.a)
My question is it possible to store integer value inside localStorage as I can do for Javascript objects without typecasting?
我的问题是可以在 localStorage 中存储整数值，就像我可以在没有类型转换的情况下为 Javascript 对象做的那样吗？
a={};
a.number=1;
typeof(a.number)
"number"
采纳答案by Adam Zerner
My question is it possible to store integer value inside localStorage as I can do for Javascript objects without typecasting?
我的问题是可以在 localStorage 中存储整数值，就像我可以在没有类型转换的情况下为 Javascript 对象做的那样吗？
No.
不。
Storage objects are simple key-value stores, similar to objects, but they stay intact through page loads. The keys can be strings or integers, but the values are always strings. [source]
存储对象是简单的键值存储，类似于对象，但它们在页面加载时保持完整。键可以是字符串或整数，但值始终是字符串。[来源]
回答by Kaiido
Actually you can, if we agree that parsing is not the same as typecasting :
实际上你可以，如果我们同意解析与类型转换不同：
let val = 42;
localStorage.answer = JSON.stringify(val);
let saved = JSON.parse(localStorage.answer);
console.log( saved === val ); // true
Fiddlesince over-protected stacksnippets don't allow localStorage.
Fiddle因为过度保护的 stacksnippets 不允许 localStorage。
For simplicity, you should anyway always stringify to JSON what you are saving in localStorage, this way you don't have to think about what you are saving / retrieving, and you will avoid "[object Object]"being saved.
为简单起见，您无论如何都应该始终将您在 localStorage 中保存的内容字符串化为 JSON，这样您就不必考虑要保存/检索的内容，并且将避免"[object Object]"被保存。
