Onclick Sets a Cookie For a Page

Question

I Have this button on my site which opens new page on click, so i was trying to set a unique cookie for every users who click on it and access the new page , if someone try to access the new page directly by url than they should see a sample text and redirect automatically to the button page. How can i do that?

<div class="button">
 <a href="/" target="_blank">CLICK HERE TO GET THIS..!</a>
</div>

Answer 1

HTML:

<div class="button">
     <a href="" onclick="what_i_want()" id="the_button" target="_blank">CLICK HERE TO 
     GET THIS..!</a>
</div>

JS :

<script>
function what_i_want()
{
    var cookie_name=Math.floor(Math.random() * 1000000) + 1;  //random name for example;
    var cookie_value=" any value";  // << you also can get value from function >> what_i_want(par,par2,par,3);
    document.cookie = cookie_name +'='+ cookie_value;
    document.getElementById('the_button').href="TARGET_LOCATION";
}
</script>