如何使用Javascript在表格中放置下拉菜单？

I want to create a table of two columns and unspecific rows. In the first column there should only a string, a name or something, but next to it there should be a drop down menu in which I can chose a modification or so. The data comes from a server and the function XY() I want to expand the table constructed in the I want to create a table of two columns and uns