App.vue

<template>
  <div id="app">
    <img alt="Vue logo" src="./assets/logo.png">
    <Article :article_id="article_id" />
  </div>
</template>

<script>
import Article from './components/Article.vue'

export default {
  name: 'app',
  data: function() {
    return {
      article_id: parseInt(window.location.href.split("/").pop())
    }
  },
  components: {
    Article
  }
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #2c3e50;
  margin-top: 60px;
  margin-left: 600px;
}
</style>