在使用AJAX选择单选按钮时显示sql表。

I have a webpage with three radio buttons and an empty table. My goal is to select a radio button and have the table show a list of employees based on whichever radio button is clicked. Right now the list does not show up when I hit the button. I don't know what I'm doing wrong. I tried adding an alert to the doAjax function and the alert appeared so I know it's getting to that function. Below is my code, I have three files. Any help is appreciated.I have a webpage with three radio buttons and a