如何将localStorage的值设置为true? [英] How to have localStorage value of true?

问题描述

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

http://jsbin.com/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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