I need to check the whether an external url like http://www.example.com exists or not using javascript or ajax.
我需要使用javascript或ajax检查是否存在http://www.example.com之类的外部URL。
Thanks in advance..
提前致谢..
1 个解决方案
#1
3
You can load it into a hidden iframe and see if you get content. You can't use "ajax" (e.g., an XMLHttpRequest call) for it, because you'll run into Same Origin Policy restrictions.
您可以将其加载到隐藏的iframe中,看看是否获得了内容。您不能使用“ajax”(例如,XMLHttpRequest调用),因为您将遇到Same Origin Policy限制。
#1
3
You can load it into a hidden iframe and see if you get content. You can't use "ajax" (e.g., an XMLHttpRequest call) for it, because you'll run into Same Origin Policy restrictions.
您可以将其加载到隐藏的iframe中,看看是否获得了内容。您不能使用“ajax”(例如,XMLHttpRequest调用),因为您将遇到Same Origin Policy限制。