HTTPRequest.failure() 方法
¥HTTPRequest.failure() method
访问有关请求失败的信息。
¥Access information about the request's failure.
签名
¥Signature
class HTTPRequest {
abstract failure(): {
errorText: string;
} | null;
}
Returns:
{ errorText: string; }
| 无效的
¥| null
null
除非请求失败。如果请求失败,则可以返回一个带有 errorText
的对象,其中包含人类可读的错误消息,例如 net::ERR_FAILED
。如果请求失败,不保证会有失败文本。
¥null
unless the request failed. If the request fails this can return an object with errorText
containing a human-readable error message, e.g. net::ERR_FAILED
. It is not guaranteed that there will be failure text if the request fails.
备注
¥Remarks
示例
¥Example
记录所有失败请求的示例:
¥Example of logging all failed requests:
page.on('requestfailed', request => {
console.log(request.url() + ' ' + request.failure().errorText);
});