获取请求后无法设置 属性 - Axios 和 HTML5 数据列表
Cannot set property after Get reques - Axios and HTML5 datalist
我正在尝试使用 Axios 执行 GET 请求,但在控制台中出现以下错误:
TypeError: Cannot set property 'films' of undefined
at eval (SearchBar.vue?e266:26)
SearchBar.vue
<template>
<section>
<input v-model='film' type='text' list='films'>
<datalist id='films'>
<option v-for='film in films' :key='film.episode_id'>{{film}}</option>
</datalist>
</section>
</template>
<script>
import axios from "axios";
export default {
name: "SearchBar",
data() {
return {
film: "",
films: []
};
},
created() {
axios
.get("https://swapi.co/api/films/")
.then(function(response) {
// handle success
//console.log(response);
this.films = response.data.results;
})
.catch(function(error) {
// handle error
console.log(error);
});
}
};
</script>
谁能告诉我为什么会出现错误?注意:我在本地运行这个是为了通过Vue-Cli
进行即时原型制作
- 一种方法是使用箭头函数:
created() {
axios
.get("https://swapi.co/api/films/")
.then((response) => {
// handle success
//console.log(response);
this.films = response.data.results;
})
.catch(function(error) {
// handle error
console.log(error);
});
}
2. 另一种方法 that = this
& 然后在 promise 回调 中使用 that
created() {
const that = this; // <-- assign this in that
axios
.get("https://swapi.co/api/films/")
.then(function (response) {
// handle success
//console.log(response);
that.films = response.data.results;
})
.catch(function(error) {
// handle error
console.log(error);
});
}
我正在尝试使用 Axios 执行 GET 请求,但在控制台中出现以下错误:
TypeError: Cannot set property 'films' of undefined
at eval (SearchBar.vue?e266:26)
SearchBar.vue
<template>
<section>
<input v-model='film' type='text' list='films'>
<datalist id='films'>
<option v-for='film in films' :key='film.episode_id'>{{film}}</option>
</datalist>
</section>
</template>
<script>
import axios from "axios";
export default {
name: "SearchBar",
data() {
return {
film: "",
films: []
};
},
created() {
axios
.get("https://swapi.co/api/films/")
.then(function(response) {
// handle success
//console.log(response);
this.films = response.data.results;
})
.catch(function(error) {
// handle error
console.log(error);
});
}
};
</script>
谁能告诉我为什么会出现错误?注意:我在本地运行这个是为了通过Vue-Cli
进行即时原型制作- 一种方法是使用箭头函数:
created() {
axios
.get("https://swapi.co/api/films/")
.then((response) => {
// handle success
//console.log(response);
this.films = response.data.results;
})
.catch(function(error) {
// handle error
console.log(error);
});
}
that = this
& 然后在 promise 回调 中使用 that
created() {
const that = this; // <-- assign this in that
axios
.get("https://swapi.co/api/films/")
.then(function (response) {
// handle success
//console.log(response);
that.films = response.data.results;
})
.catch(function(error) {
// handle error
console.log(error);
});
}