Javascript 如何从方括号内的对象解析字符串

我正在执行一个api调用，该调用将在方括号内生成一个对象

代码：

日志：

我正试图解析此对象的“distance_m”，但将其转换为字符串会导致：

    [{"id":"T_ec926d18c46e39d9","url":"https://api.automatic.com        /trip/T_ec926d18c46e39d9/","driver":"https://api.automatic.com/user/U_0c1ee2ddcfea14be/","vehicle":"https://api.automatic.com/vehicle/C_7e050c914a0d2b97/","duration_s":447.3,"distance_m":3375.3,"started_at":"2017-10-31T02:11:58.607000Z","ended_at":"2017-10-31T02:19:25.918000Z","start_timezone":"America/Toronto","end_timezone":"America/Toronto","tags":[],"idling_time_s":0,"user":"https://api.automatic.com/user/U_0c1ee2ddcfea14be/"}]

我无法从中解析任何内容（我假设是因为方括号）

我试着用正则表达式替换方括号，但也不起作用（如图所示：）

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如何将“distance_m”值提取到变量中？

方括号表示一个数组-如果您只需要第一项，则可以非常简单地访问：

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trip[0]。距离m

方括号表示一个数组-如果您只需要第一项，您可以非常简单地访问它：

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trip[0]。distance\m

trip[0]。distance\m如果这解决了您的问题，请点击分数下面的“接受此答案”复选标记：）如果这解决了您的问题，请点击分数下面的“接受此答案”复选标记：）

[ { id: 'T_ec926d18c46e39d9',
url: 'https://api.automatic.com/trip/T_ec926d18c46e39d9/',
driver: 'https://api.automatic.com/user/U_0c1ee2ddcfea14be/',
vehicle: 'https://api.automatic.com/vehicle/C_7e050c914a0d2b97/',
duration_s: 447.3,
distance_m: 3375.3,
started_at: '2017-10-31T02:11:58.607000Z',
ended_at: '2017-10-31T02:19:25.918000Z',
start_timezone: 'America/Toronto',
end_timezone: 'America/Toronto',
tags: [],
idling_time_s: 0,
user: 'https://api.automatic.com/user/U_0c1ee2ddcfea14be/' } ]

    [{"id":"T_ec926d18c46e39d9","url":"https://api.automatic.com        /trip/T_ec926d18c46e39d9/","driver":"https://api.automatic.com/user/U_0c1ee2ddcfea14be/","vehicle":"https://api.automatic.com/vehicle/C_7e050c914a0d2b97/","duration_s":447.3,"distance_m":3375.3,"started_at":"2017-10-31T02:11:58.607000Z","ended_at":"2017-10-31T02:19:25.918000Z","start_timezone":"America/Toronto","end_timezone":"America/Toronto","tags":[],"idling_time_s":0,"user":"https://api.automatic.com/user/U_0c1ee2ddcfea14be/"}]