src/directive.html

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf8">
    <meta name="viewport" content="minimal-ui,width=device-width,initial-scale=1.0, maximum-scale=1.0,minimum-scale=1.0,user-scalable=no" />
    <title>Directive</title>
    <script src="vue.js"></script>
</head>

<body>
    <div id="app">
        <span v-custom-directive="message">{{ message | reverse }}</span>
    </div>
    <script>
        Vue.directive('custom-directive', {
            bind: function(el, binding, vnode) {
                console.log('bind');
                console.log(el);
                console.log(binding);
            },
            update: function(value) {
                console.log(value);
            },
            unbind: function() {},
            inserted: function(el) {

            }
        });
        Vue.filter('reverse', function (value) {
            return value.split('').reverse().join('')
        });
        var app = new Vue({
            el: '#app',
            data: {
                message: 'Hello Directive!'
            }
        });
    </script>
</body>

</html>