在 Bootstrap 表中中断行：在 Bootstrap 表中实现行中断的指南

Question

我正在尝试在表内的数组上创建 .join() 。预期结果是每辆车（在下面的示例中）位于一排。

我尝试过使用 .join("\r\n") 和 .join("<br />")，但它不起作用。我错过了什么？

new Vue({
  el: "#table",
  data() {
    return {
      items: [
        { firstname: "John", lastname: "Doe", cars: ["Ferrari", "Tesla"] },
        { firstname: "Jane", lastname: "Doe", cars: ["BMW", "Civic"] },
        { firstname: "Jack", lastname: "Doo", cars: ["Corsa", "Golf"] },
        { firstname: "Julie", lastname: "Doo", cars: ["Fiesta", "Brasilia"] }
      ],
      fields: [
        { key: "firstname", label: "First name" },
        { key: "lastname", label: "Last name" },
        { key: "cars", label: "Cars" }
      ]
    };
  },
  methods: {
    join() {
      for (let item of this.items) {
        item.cars = item.cars.join("<br />")
      }
    }
  }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.11/vue.min.js"></script>
<script src="https://unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.js"></script>

<div id="table">
  <b-button @click="join">Join Array</b-button>
  <b-table :fields="fields" :items="items" />
</div>

与上面相同的代码片段，但在 CodePen 上。