javascript - 从 JSON 中检索值

Question

我想从下面给定的 json 中提取tenantId值

{
  "ClientAccounts":{
   "@tenantId":"entpriseDemo",
   "clientAccount":[
    {
     "guid":"447a0bac-51e0-4f5f-b504-97dca5825530",
     "totalValueFormatted":"$1,100,000"
    }
   ]
  }
}

这是我的javascript函数，用于调用ajax请求和成功函数代码

$.ajax({
      url: "$clientAccountsURL",
      cache: false,
      dataType: "json", // set to json or xml
      success: function(data){

        alert(data.ClientAccounts.tenantId);


    } 
});

当我在 success 函数中提醒tenantId 的值时，它返回了未定义的值，尽管我检查了 firebug 它在 json 数组中是否可用。

是否有其他方法来检索tenantId的值。

Answer 1

使用方括号表示法

data.ClientAccounts['@tenantId']

来自this mdn article :

An object property name can be any valid JavaScript string, or anything that can be converted to a string, including the empty string. However, any property name that is not a valid JavaScript identifier (for example, a property name that has a space or a hyphen, or that starts with a number) can only be accessed using the square bracket notation.