HTML

html input label

<!-- By reference -->
<label for="first_name">First Name</label>
<input type="text" id="first_name" name="first_name">

<!-- By wrapping -->
<label>First Name
  <input type="text" name="first_name">
</label>

label input html

<!-- Implicit -->
<label>First Name
  <input type="text" name="first_name" />
</label>

<!-- Explicit -->
<label for="firstName">First Name</label>
<input type="text" id="firstName" name="first_name">
<!-- 
Note: the 'for' attribute is mapped to the 'id' and NOT name or type
So if id='BobSponge', then for='BobSponge' 
-->