J2EE-Ajax problem

[Java Programming]

End Google Ads 201810 - BS.net 01 --> Hello, i'm using Ajax for the first time. I tried to set up a connection between the web interface (js) and my servlets.Here is the js code:var xhr = getXMLHttpRequest(); // global instance of XMLHttpRequest//var xhr; // global instance of XMLHttpRequest//function createXmlHttpRequest(){...