如何在 React Native javascript 中从 object 中删除密钥

Question

我有一个名为“colors”的 object，它有像

{
"white":"#FFFFFF",
"black":"#000000",
"red":"FF0000"
}

在某些情况下，我想要所有 colors 除了“白色”颜色

Answer 1

const source = {
"white":"#FFFFFF",
"black":"#000000",
"red":"FF0000"
};

const target = {...source};
delete target["white"]

Typescript 版本：

const source = {
"white":"#FFFFFF",
"black":"#000000",
"red":"FF0000"
};

const target: Partial<typeof source> = {...source};
delete target["white"]

Answer 2

let color = {
"white":"#FFFFFF",
"black":"#000000",
"red":"FF0000"
}

let filteredColor = Object.keys(color)
    .filter((key) => !key.includes("white"))
    .reduce((obj, key) => {
        return Object.assign(obj, {
          [key]: color[key]
        });
  }, {});

使用filter和reduce你可以过滤掉结果

Answer 3

删除源[“颜色名称”]