Open form addnew or edit

How do I Open addnew OR edit form with a button ? Example : <button> Add new </ button > .

You can use the below code for the same :

Option : 1
<button onclick="window.location='user.php?action=addnew'">Add New </button>
and
<button onclick="window.location='user.php?action=edit&id=1'">Edit </button>

Option : 2
<a href="user.php?action=addnew"><button >Add New </button></a>
and
<a href="user.php?action=edit&id=1"><button>Edit </button></a>

Tanks!