request.getHeaderNames()

• 返回：<string[]>

  ¥Returns: <string[]>

返回包含当前传出标头的唯一名称的数组。所有标头名称均为小写。

¥Returns an array containing the unique names of the current outgoing headers. All header names are lowercase.

request.setHeader('Foo', 'bar');
request.setHeader('Cookie', ['foo=bar', 'bar=baz']);

const headerNames = request.getHeaderNames();
// headerNames === ['foo', 'cookie'] 拷贝