我想知道localStorage是否可以使用布尔值而不是字符串?
I was wondering if its possible for localStorage to have a Boolean value instead of a string?
仅在无法使用JS或不可以在JS中使用JSON的情况下才使用JS,请让我知道,谢谢
Using JS only no JSON if its impossible or can be done in JS a different way please let me know thanks
jsbin/qiratuloqa/1/
//How to set localStorage "test" to true? test = localStorage.getItem("test"); localStorage.setItem("test", true); if (test === true) { alert("works"); } else { alert("Broken"); } /* String works fine. test = localStorage.getItem("test"); localStorage.setItem("test", "hello"); if (test === "hello") { alert("works"); } else { alert("Broken"); } */推荐答案
我想知道localStorage是否可以使用布尔值而不是字符串?
I was wondering if its possible for localStorage to have a Boolean value instead of a string?
否,网络存储仅存储字符串.为了存储更多的丰富数据,人们通常在存储时使用JSON并进行字符串化,而在检索时进行解析.
No, web storage only stores strings. To store more rich data, people typically use JSON and stringify when storing and parse when retrieving.
存储:
var test = true; localStorage.setItem("test", JSON.stringify(test));检索:
test = JSON.parse(localStorage.getItem("test")); console.log(typeof test); // "boolean"不过,您不仅需要布尔值就可以使用JSON;您可以只将""用作false,而将其他任何字符串用作true,因为""是一个假"值(当被视为布尔值时,该值将强制转换为false).
You don't need JSON for just a boolean, though; you could just use "" for false and any other string for true, since "" is a "falsey" value (a value that coerces to false when treated as a boolean).
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如何将localStorage的值设置为true?
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