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VisualizaçõesNode.js and express.js how to read 'get' endpoint?
I am trying to pass simple data from my server to a javascript file called on another html page. I am testing sending a single string from the server, but am not sure how to receive it. Server below:
const express = require('express')
const app = express()
const port = 3000
app.use(express.static("./assets"));
app.get('/', (req, res) => {
//res.send('Hello World!')
res.sendFile('./main.html', { root: __dirname });
})
app.listen(port, () => {
console.log(`Example app listening at http://localhost:${port}`)
})
app.get('/get-test', async (_req, res) => {
try {
const test_string = "get-test request string";
return res.send(test_string);
} catch (e) { throw e; }
});
And in another javascript file I have the following:
async function testing() {
const response = await fetch('/get-test');
console.log(response);
}
testing();
The console.log gives me a whole object, and clicking through it I can't seem to find my test_string anywhere:
So I believe the get request worked, but how do I actually access the data inside that I want?
2 Respostas
Responde à pergunta0
You need to call await response.text() before console.loging it.
0
So in this functio:
async function testing() {
const response = await fetch('/get-test');
console.log(response);
}
testing();
You will need to put await inside the console.log
so like this:
async function testing() {
const response = await fetch('/get-test');
console.log(await response);
}
testing();
Why ?
Since javascript is asynchronous when retrieving data there will be a delay. That is why they implemented async / await and promises. So when you trying to make a get request with fetch you will need need to await the response. But the response is also a promise, which mean you will need to await the response aswell. This makes more sense, when you try to process the response to lets say json.
A little tip
When the console.log returns no error, but no data either. It might because of a promise issue