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| 1 | +<script setup lang="ts"> |
| 2 | +import { onWatcherCleanup, ref, reactive, watchEffect } from "vue"; |
| 3 | +
|
| 4 | +const urlBase = "https://jsonplaceholder.typicode.com"; |
| 5 | +
|
| 6 | +const selectedUserId = ref(); |
| 7 | +const users = reactive({ value: undefined, loading: false }); |
| 8 | +const posts = reactive({ value: undefined, loading: false }); |
| 9 | +
|
| 10 | +watchEffect(function fetchUsers() { |
| 11 | + users.loading = true; |
| 12 | + const controller = new AbortController(); |
| 13 | + onWatcherCleanup(() => controller.abort()); |
| 14 | +
|
| 15 | + fetch(`${urlBase}/users`, { signal: controller.signal }) |
| 16 | + .then(async (response) => { |
| 17 | + users.value = await response.json(); |
| 18 | + }) |
| 19 | + .catch((error) => { |
| 20 | + if (!(error instanceof DOMException && error.name === "AbortError")) { |
| 21 | + throw error; |
| 22 | + } |
| 23 | + }) |
| 24 | + .finally(() => { |
| 25 | + users.loading = false; |
| 26 | + }); |
| 27 | +}); |
| 28 | +
|
| 29 | +watchEffect(function fetchPosts() { |
| 30 | + if (selectedUserId.value === undefined) return; |
| 31 | + posts.loading = true; |
| 32 | + const controller = new AbortController(); |
| 33 | + onWatcherCleanup(() => controller.abort()); |
| 34 | +
|
| 35 | + fetch(`${urlBase}/posts?userId=${selectedUserId.value}`, { |
| 36 | + signal: controller.signal, |
| 37 | + }) |
| 38 | + .then(async (response) => { |
| 39 | + posts.value = await response.json(); |
| 40 | + }) |
| 41 | + .catch((error) => { |
| 42 | + if (!(error instanceof DOMException && error.name === "AbortError")) { |
| 43 | + throw error; |
| 44 | + } |
| 45 | + }) |
| 46 | + .finally(() => { |
| 47 | + posts.loading = false; |
| 48 | + }); |
| 49 | +}); |
| 50 | +</script> |
| 51 | + |
| 52 | +<template> |
| 53 | + <h1>Buildless Vue 3 app</h1> |
| 54 | + <label v-if="users.value"> |
| 55 | + Select User: |
| 56 | + <select v-model.number="selectedUserId"> |
| 57 | + <option hidden selected></option> |
| 58 | + <option v-for="user in users.value" :key="user.id" :value="user.id"> |
| 59 | + @{{ user.username }}: {{ user.name }} |
| 60 | + </option> |
| 61 | + </select> |
| 62 | + </label> |
| 63 | + <p v-else-if="users.loading">Loading Users...</p> |
| 64 | + <ul v-if="posts.value"> |
| 65 | + <li v-for="post in posts.value" :key="post.id">{{ post.title }}</li> |
| 66 | + </ul> |
| 67 | + <p v-else-if="posts.loading">Loading Posts...</p> |
| 68 | + <p v-else-if="users.value">Select User to view posts</p> |
| 69 | + <p> |
| 70 | + Data Source: |
| 71 | + <a href="https://jsonplaceholder.typicode.com/" target="_blank"> |
| 72 | + JSONPlaceholder |
| 73 | + </a> |
| 74 | + </p> |
| 75 | +</template> |
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