how it works? how to get the data?how secure is this? Is this can work to html alone?

Question

<form method="GET">
<input type="text" name="username" /><br />
<input type="PASSWORD" name="password" />
</form>

Answer 1

You can check here..

1. https://www.w3schools.com/tags/tag_form.asp

2. https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.w3schools.com/tags/ref_httpmethods.asp&ved=2ahUKEwir_a7NjYnpAhUBOSsKHRBJCIYQFjAAegQIAxAB&usg=AOvVaw1Jv4zkrWlgxGHp_1W9ypYB