常见问题

waitFor系列函数全部不可用

waitFor系列的所有函数都无效

经过实际测试,waitFor系列的各个函数,此处都无效

    # await page.waitForSelector(SearchFoundWordsSelector)
    # await page.waitFor(SearchFoundWordsSelector)
    # await page.waitForXPath(SearchFoundWordsXpath)
    # Note: all above exception: 发生异常: ElementHandleError Evaluation failed: TypeError: MutationObserver is not a constructor

都会报错:ElementHandleError Evaluation failed: TypeError: MutationObserver is not a constructor

所以,如果想要实现,等待元素出现,只能while+querySelector去不断检测去实现

比如

waitSeconds = 1
while not await page.querySelector(xxxSelector):
  await asyncio.sleep(waitSeconds)

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