Unable to fire Twitter Click event

I want to call jcl callback js function on "Tweet". My code:

<a href="https://twitter.com/share" class="twitter-share-button" data-url="https://twitter.com/share" data-via="josephjohnbless">Tweet</a>
<script>
    window.twttr = (function (d, s, id) {
        var t, js, fjs = d.getElementsByTagName(s)[0];
        if (d.getElementById(id)) return; js = d.createElement(s); js.id = id;
        js.src = "https://platform.twitter.com/widgets.js";
        fjs.parentNode.insertBefore(js, fjs);
        return window.twttr || (t = { _e: [], ready: function (f) { t._e.push(f) } });
    }(document, "script", "twitter-wjs"));
</script>
<script>
    twttr.ready(function (twttr) {
        twttr.events.bind('click', function (event) { alert('yes'); });
    });
</script>

      

        
        
        
      

    

There is Uncaught TypeError: Cannot read property 'ready' of undefined

for twttr.ready()

. I saw that this is a valid solution on this StackOverflow question , but as I said it doesn't work for me.

EDIT: I solved the problem as follows: 1. I changed this code:

<script>
    window.twttr = (function (d, s, id) {
        var t, js, fjs = d.getElementsByTagName(s)[0];
        if (d.getElementById(id)) return; js = d.createElement(s); js.id = id;
        js.src = "https://platform.twitter.com/widgets.js";
        fjs.parentNode.insertBefore(js, fjs);
        return window.twttr || (t = { _e: [], ready: function (f) { t._e.push(f) } });
    }(document, "script", "twitter-wjs"));
</script>

      

        
        
        
      

    

from:

<script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>

      

        
        
        
      

    

2. I was calling this code:

     twttr.ready (function (twttr) {twttr.events.bind ('click', function (event) {alert ('yes');});});

in the wrong place in my files. I was calling it on the parent view (my ASP.NET MVC application) instead in the partial view where I had mine <a href="https://twitter.com/share" class="twitter-share-button" data-url="https://twitter.com/share" data-via="josephjohnbless">Tweet</a>

and <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>

. And it was.