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)