因此,我正在尝试获取后端代码,并从后端查询的API接收json响应。它正在返回一个对象,但是,我的json要么埋在其中,要么不存在。我可以将数据记录在节点中,但无法将其发送回去。我尝试过res-send,res-json和res-end。我不确定我要去哪里。谢谢您的帮助!
Web应用程序控制台响应 响应{类型:“基本”,网址:“ http://localhost:3003/father”,重定向:false,状态:200,确定:true,…}
前端javascript
document.querySelector('.sub').addEventListener('click', function (e) {
e.preventDefault()
const wordSearched = document.querySelector('.word').value;
fetch(`/${wordSearched}`)
.then(function(answer) {
console.log(answer);
const number = answer.total_results;
console.log(number);
const tag = document.querySelector(".tagg").innerHTML = `The word
${wordSearched} was used ${number} times!`;
return tag
})
.catch(function(error) {
console.log(' There has been a problem with the fetch operation: ',
error.message);
})});
后端node.js
const express = require('express');
const app = express();
const morgan = require('morgan');
const fetch = require('node-fetch');
app.use(express.static('\public'));
app.use(morgan('short'));
app.get('/:wordSearched', (req, res) => {
let word = req.params.wordSearched;
console.log(word);
fetch(`https://api.esv.org/v3/passage/search/?q=${word}`, {
headers: {
'Authorization': 'Token kkkdddd88383' // API Token
}
})
.then(function(response) {
return response.json()
})
.then(function(myJson) {
const number = myJson.total_results;
console.log(number);
res.send(myJson) //cant send number??
})
.catch(function(error) {
console.log(' There has been a problem with the fetch operation: ', error.message);
})
});
//local host
app.listen(3003, () => {
console.log('server is up on 3003');
});
答案 0 :(得分:0)
因此,在阅读https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch上的获取文档后,我发现了问题。我不得不打电话给
.then(function(response) {
return response.json()
})
在我的前端也是如此。我以前只在后端调用它,以为是我发送的json。除非我在每一端都调用.json(),否则我不会得到答案。