Traversing the dom from identifiable element to unidentifiable element

JavaScript
1

I have a <TH> element that I can find using it’s ID. Under that is a<SELECT> which has no way of identifying it, excepting for that it is a child of the . It has options and I am struggling to find a way to manipulate the .value and .selectIndex attributes of the <SELECT> so that I can grammatically reset the Dropdown (value=“” and selectIndex=0).

Any help, hints etc would be much appreciated.

2

I have edited your post so that the elements mentioned are displayed as code and not rendered, you need to use backticks to avoid this for next time you want to write an element