Doubt regarding Attributes

Question

Hello, I am new to HTML, I have a small doubt regarding attributes,
Should I use specific name or any variable to change specific thing ?
For example :
If I want to change width of horizontal line,
Should I must use width = "50px" or can I use something = "50px"?
In detail :
SoloLearn Code :
<hr width = "50px">
My code :
< hr something = '50px'>
Note : I must have tested it, But people clarifing doubts is the best way to learn for me !..

Answer 1

No programming languages don't consider fixed syntax as variables. that would be like saying you could write a for loop by doing apple( var i = 0; i < 10; i ++) {}
the attributes in html are the same. they are fixed names that are a part of the W3C standard for the language.

Answer 2

if you want to change the width you say width="50px"
what else would you use to change the width?

Answer 3

no. it doesn't make sense. if you want to change the width why would you say blue="50px" or if you want to alter the color why would you say camel="red"?

Answer 4

Adam thanks for the clarification !. :D, Have a Great day :D !.

Answer 5

and you too. :)

Answer 6

Adam , That's What I am asking, Is there a chance to use any variable?

Answer 7

Adam I am asking this because, many programming languages consider them as variables, and We can give them any name !. So, Finally doubt, How does Html editor know the attribs ?