如何使用 javascript 中的此键编写代码来提取值？
How can I write code using this key in javascript to extract the value?
这是我通过 API 获取的 data:
{ "0x5af2be193a6abca9c8817001f45744777db30756": { "usd": 0.11039 }}
但是当我尝试访问要放入 html 的数据时，使用：
var price = data.0x5af2be193a6abca9c8817001f45744777db30756.usd;
错误读回：
Uncaught SyntaxError: Invalid or unexpected token
我认为是因为它无法识别 0x5af2be193a6abca9c8817001f45744777db30756
作为一个字符串，但我不知道如何修复它。
试试下面的代码：
var price = data["0x5af2be193a6abca9c8817001f45744777db30756"].usd;
根据 JavaScript MDN 文档 Objects and Properties
"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."
您的密钥“0x5af2be193a6abca9c8817001f45744777db30756”是一个无效标识符，因为它以数字开头。您可以使用方括号表示法访问它：
var price = data["0x5af2be193a6abca9c8817001f45744777db30756"].usd;
这是我通过 API 获取的 data:
{ "0x5af2be193a6abca9c8817001f45744777db30756": { "usd": 0.11039 }}
但是当我尝试访问要放入 html 的数据时，使用：
var price = data.0x5af2be193a6abca9c8817001f45744777db30756.usd;
错误读回：
Uncaught SyntaxError: Invalid or unexpected token
我认为是因为它无法识别 0x5af2be193a6abca9c8817001f45744777db30756
作为一个字符串，但我不知道如何修复它。
试试下面的代码：
var price = data["0x5af2be193a6abca9c8817001f45744777db30756"].usd;
根据 JavaScript MDN 文档 Objects and Properties
"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."
您的密钥“0x5af2be193a6abca9c8817001f45744777db30756”是一个无效标识符，因为它以数字开头。您可以使用方括号表示法访问它：
var price = data["0x5af2be193a6abca9c8817001f45744777db30756"].usd;