我是一名学生，我刚刚接触 Vue.js，所以我对它还是很陌生。现在我正在做一个项目，我从 API 获取用户名，当你点击用户时它必须显示相关的帖子，但这不起作用。当我单击带有 v-on:click 事件的按钮时。没有任何反应，甚至在控制台中也没有。所以我希望有人能帮助我解决我的问题，我将不胜感激。
主要.js :
const app = new Vue({
el: "#app",
data: {
users: [],
posts: [],
},
methods: {
Showpost(id, i) {
fetch("https://jsonplaceholder.typicode.com/posts?userId=" + id)
.then(response =>response.json())
.then((data) => {
this.posts = data;
})
},
},
mounted() {
fetch("https://jsonplaceholder.typicode.com/users")
.then(response => response.json())
.then((data) => {
this.users = data;
})
},
template: `
<div>
<td v-for="user, i in users">
<button v-on:click="Showpost(user.id, i)" >{{ user.name }}</button>
</td>
<h1>{{ posts.title }}</h1>
</div>
`,
});
HTML :
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
<title>Users</title>
</head>
<body>
<h1>Users</h1>
<div id="app">
</div>
<script src="https://unpkg.com/vue"></script>
<script src="./main.js"></script>
</body>
</html>
json 用户:
{
"id": 1,
"name": "Leanne Graham",
"username": "Bret",
"email": "Sincere@april.biz",
"address": {
"street": "Kulas Light",
"suite": "Apt. 556",
"city": "Gwenborough",
"zipcode": "92998-3874",
"geo": {
"lat": "-37.3159",
"lng": "81.1496"
}
},
"phone": "1-770-736-8031 x56442",
"website": "hildegard.org",
"company": {
"name": "Romaguera-Crona",
"catchPhrase": "Multi-layered client-server neural-net",
"bs": "harness real-time e-markets"
}
}
json 帖子:
{
"userId": 1,
"id": 1,
"title": "sunt aut facere repellat provident occaecati excepturi optio reprehenderit",
"body": "quia et suscipit\nsuscipit recusandae consequuntur expedita et cum\nreprehenderit molestiae ut ut quas totam\nnostrum rerum est autem sunt rem eveniet architecto"
}
最佳答案
尝试创建一个名为 post 的属性，并通过分配 this.post=data[i] 在每次点击指定用户时更新它:
new Vue({
el: "#app",
data: {
users: [],
posts: [],
post: ''
},
methods: {
Showpost(id, i) {
fetch("https://jsonplaceholder.typicode.com/posts?userId=" + id)
.then(response => response.json())
.then((data) => {
this.post = data[i];
})
},
},
mounted() {
fetch("https://jsonplaceholder.typicode.com/users")
.then(response => response.json())
.then((data) => {
this.users = data;
})
},
template: `
<div class="flex">
<div v-for="user, i in users">
<button class="btn" v-on:click="Showpost(user.id, i)" >{{ user.name }}</button>
</div>
<h1>{{ post.title }}</h1>
</div>
`,
});.flex{
display:flex;
flex-wrap:wrap;
}<!DOCTYPE html>
<html>
<head>
<meta name="description" content="Vue.delete">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.2.1/vue.min.js"></script>
</head>
<body>
<div id="app">
</div>关于javascript - v-on :click event Vue. js 显示用户帖子，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53033111/