javascript - 在 switch case 中使用对象 - javascript

Question

如何在 switch case 中加载对象？
例如，这是我的对象

{"1":"Restaurant","2":"Hotel","3":"Beauty shop","4":"Physiotherapist","5":"Dentist","6":"Bar","7":"Coffee shop"}

由于多语言，我无法为每种业务类型编写案例，我想将该 ID 与 BusinessType 反转，因为它是一个 CSV 导入器，客户端发送“餐厅”，如果客户端发送“餐厅”，我必须转换它对于“1”
我怎样才能让它成为一个开关盒？
我正在寻找它是相反的
例如

Restaurant = 1

不是

1 = Restaurant

这是一个例子，对象可能因语言而异

  switch (csvItem["Business Type"]){
    case 'Restaurant': csvItem["Business Type"] = 1;
    break;

对于 nina 解决方案，我遇到了这个问题

let businessTypes = document.getElementById('all-business-types').value;

const
  data = businessTypes,
  switched = Object.fromEntries(Object.entries(data).map(([k, v]) => [v, +k]));

console.log('switched ' + switched);

但在我的控制台中，结果是 switched [object Object]如果我使用 console.log('switched ' + JSON.stringify(switched));我得到这个结果

{"1":2,"2":19,"3":31,"4":49,"5":71,"6":85,"7":95,"{":0,"\"":110,":":97,"R":6,"e":104,"s":106,"t":81,"a":90,"u":38,"r":91,"n":77,",":93,"H":23,"o":108,"l":27,"B":89,"y":55," ":105,"h":107,"p":109,"P":53,"i":79,"D":75,"C":99,"f":102,"}":111}

我的浏览器日志中的业务类型

{"1":"Restaurant","2":"Hotel","3":"Beauty shop","4":"Physiotherapist","5":"Dentist","6":"Bar","7":"Coffee shop"}

谢谢阅读 :)

Answer 1

您可以切换条目并将键/字符串转换为数字。

const
    json = '{"1":"Restaurant","2":"Hotel","3":"Beauty shop","4":"Physiotherapist","5":"Dentist","6":"Bar","7":"Coffee shop"}',
    data = JSON.parse(json),
    switched = Object.fromEntries(Object
        .entries(data)
        .map(([k, v]) => [v, +k])
    );

console.log(switched);

.as-console-wrapper { max-height: 100% !important; top: 0; }

用法:

csvItem["Business Type"] = switched[csvItem["Business Type"]];