Question

我有一个字符串形式的本地存储密钥。外观如下：

git

在控制台上打印：

spring:
  cloud:
    config:
      server:
        git:
          uri: https://github.com/spring-cloud-samples/config-repo

仅供参考：var key = localStorage.getItem(localStorage.key(0)); console.log(key);

我要删除此部分{"logged_user":"myname","abcDatatitle":"AHarmbca Reports","abcData":"300"};，以便密钥console.log(typeof key); prints string如下所示：

"abcDatatitle":"AHarmbca Reports"

我可以像这样使用javascript的(console.log(key);)函数

{"logged_user":"myname","abcData":"300"};

，但这只会删除此replace部分。考虑到以下情况，如何确定整个key = key.replace("abcDatatitle","");部分都消失了这个值abcDatatitle是动态值。

Answer 1

您可以使用Delete

例如

var myObject = {"logged_user":"myname","abcDatatitle":"AHarmbca Reports","abcData":"300"};
delete myObject.abcDatatitle
console.log(JSON.stringify(myObject));

https://jsfiddle.net/pimboden40/eokdwr4c/7/

Answer 2

使用JSON.parse，然后删除对象密钥，然后使用JSON.stringify

//convert string to object
var key = localStorage.getItem(localStorage.key(0))
var objKey = JSON.parse(key)
delete objKey.abcDatatitle

//parse to string again
var strKey = objKey = JSON.stringify(objKey)

// update localStorage
localStorage.setItem(localStorage.key(0), strKey)

Answer 3

你可以做到

//the key is localStorage.key(0)
localStorage.setItem(localStorage.key(0),'{"logged_user":"myname","abcDatatitle":"AHarmbca Reports","abcData":"300"}')
// we get the object data using JSON.parse(string)
obj = JSON.parse(localStorage.getItem(localStorage.key(0)));
// we delete the property
delete obj.abcDatatitle
// we store the new object as string using JSON.stringify(json)
localStorage.setItem(localStorage.key(0),JSON.stringify(obj));

尝试从本地存储密钥中删除特定值

3 个答案: