How can I call controller/method inside button onclick?

Question

I want to call a controller with method onclick. I solved this, but I want to find a solution for this.

<button type="button" class="btn btn-success" onclick="<?php  ?>">Sign Up</button>

Answer 1

Try this code:

<button type="button" class="btn btn-success" onclick="window.location='<?php echo site_url("controller/fun_name");?>'">Sign Up</button>