如何从本地存储中删除对象

vidit 发表于 Dev

锯

这是我的代码我想从本地存储中删除https://prnt.sc/j9Un7C5nxDCZ自定义包 1 对象我尝试了 removeitem() 但它没有删除我的对象

var all_pack = JSON.parse(localStorage.getItem("CartItems"));

var object_length = Object.keys(all_pack).length;

var selected_option = "custom meal pack-1";

for (var i = 0; i < object_length; i++) {
  var p = Object.keys(all_pack)[i];
  if (selected_option === p) {
    Object.keys(all_pack)[i].removeItem();
  }
}

破碎的

存储存储字符串。你必须读取字符串，解析它，修改它，序列化它并写回它。

您的代码片段让我假设您不想从存储中删除项目，而是要从存储在本地存储中的对象中删除属性。

const all_pack = JSON.parse(localStorage.getItem("CartItems"));

const selected_option = "custom meal pack-1";

for (key in all_pack) {
  if (selected_option === key) {
    delete all_pack[key];
  }
}

// update local storage
// localStorage.setItem("CartItems", JSON.stringify(all_pack));

例子：

const all_pack = JSON.parse('{ "custom meal pack-1": true, "custom meal pack-2": true}');
    
const selected_option = "custom meal pack-1";
    
for (key in all_pack) {
  if (selected_option === key) {
    delete all_pack[key];
  }
}

console.log(all_pack);

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