Question

How do you get the value set in this plugin out again?

Example below shows a variable I want available on the page anywhere I need to call it. put all I get is undefined?

plugin.js

(function($) {
    $.fn.myPlugin = function(options) {
        options.val ++;
        // access and modify 'somevar' here so that it gets modified
        // in the function which called a plugin

    };
})(jQuery);

script on page

<script>
    $(document).ready(function(){
        var somevar = {val: 5};
        $(document).myPlugin(somevar);
    });
</script>

<script>
    $(document).ready(function(){
        alert(somevar.val);
    });
</script>

Answer 1

Your somevar is declared local in the first $(document).ready(), to be accessible in the second one you should rather do :

<script>
    var somevar;
    $(document).ready(function(){
        somevar = {val: 5};
        $(document).myPlugin(somevar);

    });
</script>

<script>
    $(document).ready(function(){
        alert(somevar.val);
    });
</script>