In your setInterval you are executing the function and passing it's return value as argument, instead of passing function itself as argument. It should be:
const handle = setInterval(scrape, 4000);
Note, you won't be use this inside the function, because it will be called inside setInterval scope. If you need to use this, then use bind():
You seem to be calling the "scrape()" method in two places. Once in the SetInterval() method and then immediately again on the line after. That looks like your problem.
发布评论
评论（2）
在您的
setInterval中，您正在执行函数并将其返回值作为参数传递，而不是将函数本身传递为参数。应该是：
请注意，您不会在功能内使用
此，因为它将在setInterval范围内进行调用。如果您需要使用
此，请使用bind（）：In your
setIntervalyou are executing the function and passing it's return value as argument, instead of passing function itself as argument.It should be:
Note, you won't be use
thisinside the function, because it will be called insidesetIntervalscope.If you need to use
this, then usebind():您似乎在两个地方称为“ scrape（）”方法。一旦进入setInterval（）方法，然后立即在线路上再次在线上。看起来像你的问题。
You seem to be calling the "scrape()" method in two places. Once in the SetInterval() method and then immediately again on the line after. That looks like your problem.