Vue. How to get a value of a "key" attribute in created element : <p>I try to create a components and get its key for using in axios.
Elements created, but I can't get a key. It's undefined</p>

<pre><code>&lt;div class="container" id="root"&gt;
    &lt;paddock is="paddock-item" v-for="paddock in paddocks" :key="paddock.key" class="paddock"&gt;
    &lt;/paddock&gt;
&lt;/div&gt;
&lt;script&gt;
var pItem = {
    props: ['key'],
    template: '&lt;div :test="key"&gt;&lt;/div&gt;',
    created: function() {
        console.log(key);
    }
    };
new Vue({
    el: '#root',
    components: {
        'paddock-item': pItem
    },
    data: {
        paddocks: [
            {key: 1},
            {key: 2},
            {key: 3},
            {key: 4}
        ]
    }
})
&lt;/script&gt;
</code></pre>

<p>I try some variants, but no result - @key was empty.</p>
