我试图渲染一个组件，但我得到错误：属性或方法“笑”未定义在实例上未定义但在渲染期间引用。我正在使用爸爸的笑话api通过axios http库获取数据。这是我的代码：
var joke = Vue.component('joke', {
template: '#joke',
data() {
return {
jokes: []
};
},
created() {
axios
.get('https://icanhazdadjoke.com/search', {
headers: {
Accept: 'application/json'
},
params: {
limit: 30
}
})
.then(response => {
this.jokes = response.data.results;
});
}
});
new Vue({
el: '#main'
}); <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>vue Dad JOkes</title>
<!--styles-->
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Montserrat">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
<link rel="stylesheet" href="style.css">
<!--scripts-->
<script src="https://unpkg.com/[email protected]/dist/vue.js" charset="utf-8"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>
<body>
<div id="main">
<joke></joke>
</div>
<template id="joke">
<ul>
<li v-for="joke in jokes"></li>
<p>{{joke.joke}}</p>
</ul>
</template>
<script src = "app.js" charset="utf-8"></script>
</body>
</html>这是html的一个简单问题，你在使用</li>之前结束了{{joke}}
更改
<ul>
<li v-for="joke in jokes"></li>
<p>{{joke.joke}}</p>
</ul>
至
<ul>
<li v-for="joke in jokes">
<p>{{joke.joke}}</p>
</li>
</ul>
这是你的工作示例：
var joke = Vue.component('joke', {
template: '#joke',
data() {
return {
jokes: []
};
},
created() {
axios
.get('https://icanhazdadjoke.com/search', {
headers: {
Accept: 'application/json'
},
params: {
limit: 30
}
})
.then(response => {
this.jokes = response.data.results;
});
}
});
new Vue({
el: '#main'
}); <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>vue Dad JOkes</title>
<!--styles-->
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Montserrat">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
<link rel="stylesheet" href="style.css">
<!--scripts-->
<script src="https://unpkg.com/[email protected]/dist/vue.js" charset="utf-8"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>
<body>
<div id="main">
<joke></joke>
</div>
<template id="joke">
<ul>
<li v-for="joke in jokes">
<p>{{joke.joke}}</p>
</li>
</ul>
</template>
<script src = "app.js" charset="utf-8"></script>
</body>
</html>