Can attribute values be set to anything or are there specific values that they accept?

Question

I want to know answer to this question as I am not able to move ahead with my project

Answer 1

you cant give ay values to the attribute there are a specific set of values allowed for all the attributes :

Check this link for the values of "type" attribute used in input tag:
https://www.w3schools.com/tags/att_input_type.asp