javascript – capture < option > value with jQuery

Question:

Guys I have the following select in html.

 <select name='busca' onChange='link()'>
            <option value="1">OP1</option> 
            <option value="2">OP2</option>
            <option value="3">OP3</option>
            <option value="4">OP4</option> 
        </select>    

I need to create a function in jQquey called link where it takes the value of the select and loads a link, example: envia.php?op=1

Does anyone know how to do this?

Answer:

It is possible through jQuery's own change event to obtain the value:

$('select[name="busca"]').on("change",function(ev){
  var linkEnviar = "envia.php?op=" + $(this).val();
  console.log(linkEnviar);
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="busca" name='busca'>
  <option value="1">OP1</option>
  <option value="2">OP2</option>
  <option value="3">OP3</option>
  <option value="4">OP4</option>
</select>