16. Sorting a list

We have a list of objects. We can sort the list using the array sort function.

Depending on which button is clicked, we either sort ascending or descending.

This is the App.vue file:

<template>
  <div>
    <button @click="sort(1)">Ascending</button>
    <button @click="sort(-1)">Descending</button>
    <h2 v-for="v in arr">{{v.id}} - {{v.val}}</h2>
  </div>
</template>

<script>
export default {
  data() {
    return {
      arr: [
        {id: "A", val: 5},
        {id: "B", val: 7},
        {id: "C", val: 9},
        {id: "D", val: 12},
        {id: "E", val: 15},
        {id: "F", val: 6}
      ]
    }
  },
  methods: {
    sort: function(p) {
      this.arr.sort(function(a,b) {
        return (a.val - b.val) * p;
      });
    }
  }
}
</script>

<style>
button {
  color: white;
  background-color: green;
  border-radius: 10px;
  padding: 5px;
  display: block;
  margin: 0 auto;
}
h2 {
  color: blue;
  background-color: orange;
  width: 400px;
}
</style>

This is the output after ascending button is clicked: