Why we have the same output with defferent Html forms? Is there many types of html coding system?

Question

<form>
<label>Your name:</label>
<input type="text" name="username" type="text" />
</form>
<form>
<label>Your name:</label>
<input id="user" name="username" type="text" />
</form>

Answer 1

Note that in the first one you used type='text' 2 times and in the second one only once and user is your id here. The type of an input (text,number,password,email,etc) is the one that makes the difference