Javascript 需要帮助制作导航条显示api中的图像吗
我是个新手,我正在尝试建立一个画廊网站,根据用户点击的按钮显示图片,图片是从flickr api中提取的,该网站如下所示 我的应用程序组件是使用此功能向flickr发出请求的主要组件,因为我可以在搜索输入上搜索图片Javascript 需要帮助制作导航条显示api中的图像吗,javascript,reactjs,react-router-v4,react-component,Javascript,Reactjs,React Router V4,React Component,我是个新手,我正在尝试建立一个画廊网站,根据用户点击的按钮显示图片,图片是从flickr api中提取的,该网站如下所示 我的应用程序组件是使用此功能向flickr发出请求的主要组件,因为我可以在搜索输入上搜索图片 //this function will create the search feature performSearch = (query = "sunset") => { //include a query parameter so that flickr
//this function will create the search feature
performSearch = (query = "sunset") => {
//include a query parameter so that flickr can return images based on user input, and provide a default value for query parameter to display sunset pics when the page first loads
//fetch data from flickr
axios
.get(
`https://api.flickr.com/services/rest/?method=flickr.photos.search&api_key=${apiKey}&tags=${query}&per_page=24&format=json&nojsoncallback=1`
)
.then(response => { //set the response so that pics will be equal to the data array containing photos from flickr
console.log(response)
this.setState({
pics: response.data.photos.photo,
loading: false //initialize a loading state to display a loading message
});
})
.catch(error => { //this catch method outputs a message to the console, should axios fail to retrieve data
console.log("Something went wrong, could not access data", error);
});
};
但是,我的目标是渲染来自猫、狗和计算机组件的图像,并根据单击的按钮显示图像,但我不确定如何进行,这是我的猫组件
import React from "react";
const Cats = () => (
<div>
<h2>I want to render cat images as soon as a user click the cats button</h2> {/*pass string as prop from app line 29*/}
<p>Is it true that cats have 9 lives?</p>
</div>
);
export default Cats;
从“React”导入React;
常数猫=()=>(
我想在用户单击cats按钮后立即渲染cat图像{/*从应用程序行29将字符串作为道具传递*/}
猫有九条命是真的吗
);
输出默认猫;
我想我应该提到的是,我的3个主题位于Components文件夹中,而我的app.js位于外部,如下所示
任何有用的提示都将不胜感激,这是我的回购协议供参考我查看了回购协议,它不必要地复杂。。。以下是您可以做的: 四个组件:
App.js
,Form.js
,Gallery.js
,GalleryItem.js
加上axios的助手方法
这是你的应用程序。js:
import React from 'react';
import Form from './Form';
import Gallery from './Gallery';
import flickr from '../utils/flickr';
class App extends React.Component {
state = { images: [], isLoading: true };
async componentDidMount() {
const response = await flickr.get('/services/rest/', {
params: {
tags: 'random',
},
});
this.setState({ images: response.data.photos.photo, isLoading: false });
}
handleSearch = async term => {
this.setState({ isLoading: true });
const response = await flickr.get('/services/rest/', {
params: {
tags: term,
},
});
this.setState({ images: response.data.photos.photo, isLoading: false });
};
fetchCats = async () => {
this.setState({ isLoading: true });
const response = await flickr.get('/services/rest/', {
params: {
tags: 'cats',
},
});
this.setState({ images: response.data.photos.photo, isLoading: false });
};
fetchDogs = async () => {
this.setState({ isLoading: true });
const response = await flickr.get('/services/rest/', {
params: {
tags: 'dogs',
},
});
this.setState({ images: response.data.photos.photo, isLoading: false });
};
fetchComputers = async () => {
this.setState({ isLoading: true });
const response = await flickr.get('/services/rest/', {
params: {
tags: 'laptops',
},
});
this.setState({ images: response.data.photos.photo, isLoading: false });
};
render() {
if (this.state.isLoading) {
return <div className="spinner">Loading...</div>;
}
return (
<div className="photo-container">
<Form handleSearch={this.handleSearch} />
<nav className="main-nav">
<ul>
<li onClick={this.fetchCats}>CATS</li>
<li onClick={this.fetchDogs}>DOGS</li>
<li onClick={this.fetchComputers}>COMPUTERS</li>
</ul>
</nav>
<h2>Results</h2>
<Gallery images={this.state.images} />
</div>
);
}
}
export default App;
import React from 'react';
class Form extends React.Component {
state = { term: '' };
handleChange = event => {
this.setState({ [event.target.name]: event.target.value });
};
handleSubmit = event => {
event.preventDefault();
this.props.handleSearch(this.state.term);
this.setState({ term: '' });
};
render() {
return (
<form className="search-form" onSubmit={this.handleSubmit}>
<input
type="text"
name="term"
placeholder="Search"
value={this.state.term}
onChange={this.handleChange}
/>
<button
type="submit"
className="search-button"
onClick={this.handleSubmit}
>
<svg
fill="#fff"
height="24"
viewBox="0 0 23 23"
width="24"
xmlns="http://www.w3.org/2000/svg"
>
<path d="M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z" />
<path d="M0 0h24v24H0z" fill="none" />
</svg>
</button>
</form>
);
}
}
export default Form;
import React from 'react';
import GalleryItem from './GalleryItem';
const Gallery = ({ images }) => (
<ul>
{images.map(image => {
return <GalleryItem key={image.id} image={image} />;
})}
</ul>
);
export default Gallery;
import React from 'react';
const GalleryItem = ({ image }) => (
<li>
{image && (
<img
src={`https://farm${image.farm}.staticflickr.com/${image.server}/${
image.id
}_${image.secret}.jpg`}
alt={image.title}
/>
)}
</li>
);
export default GalleryItem;
import axios from 'axios';
const API_KEY = process.env.REACT_APP_FLICKR_KEY; (using the built in .env instead of config...)
export default axios.create({
baseURL: 'https://api.flickr.com',
params: {
method: 'flickr.photos.search',
per_page: 24,
format: 'json',
nojsoncallback: 1,
api_key: API_KEY,
},
});
没有必要对…做出反应
这里是一个实时演示(重要提示:在项目根目录中找到.env
文件,您将看到类似的内容:REACT\u APP\u FLICKR\u KEY=您的\u API\u KEY\u此处
。只需将您的\u API\u KEY\u此处
替换为您的API密钥……无需用引号括起来……)
为什么不在用户点击按钮并显示猫的图像时发送get请求以获取猫的图像。。。诸如此类。。。到底是什么问题?我想知道我是否可以在不创建猫、狗、计算机组件的情况下创建该功能我可以在应用程序组件中创建多个get请求,我尝试查看演示,我找到了.env文件,并将api密钥放在那里,但我得到的只是加载message@ErikL一分钟前还在和我一起工作。。。把钥匙放在=符号后面。。。换句话说,‘RAECT_APP_FLICKR_KEY=1234examole’@ErikL可以玩转它,试着理解它是如何工作的。。。那是一个地狱般的折射器…@ErikL那里发生了很多事情。。。如果你有问题-问。。。如果答案有帮助,请接受并投票…我真的很感谢ypu花时间做这件事,多亏了你,我开始理解react,而且react路由器还有很多