javascript - login & table scroll

I was going to try and solve this with a CMD Python program using the requests library but I'm running into problems, can I solve this with JS? Thanks.

connect to URL
ask user to enter username and store in username-variable
ask user to enter password and store in password-variable

input data from username-variable into username field:
<input id="inptUserId" maxlength="8"
name="txt_inptUserId" onkeyup="autoSkipNN(event.which,this);" onfocus="saveFocusedControl("inptUserId");"...

javascript - login & table scroll

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