在 Javascript 和 Express 中从前到后发送数据

Question

I created a variable to catch data from my frontend and want to retrieve it in my Express backend.

My js variable and POST request:

const dataPush = {
                urlSave: urlSave,
                imgSave: imgSave,
                marqueSave: marqueSave,
                smSave: smSave,
                typeSave: typeSave,
                precisionSave: precisionSave,
                yearsSave: yearsSave,
                coteEuSave: coteEuSave,
                coteUsdSave: coteUsdSave,
                coteGbSave: coteGbSave,
                coteChfSave: coteChfSave
            }
            let postIdUrl = String('/fr/post')
            fetch(postIdUrl, {
                method: "POST",
                body: JSON.stringify({"data": "dataPush"}),
                headers: { "Content-Type": "application/x-www-form-urlencoded" }
            })
            console.log(dataPush)

And it's okay, I get all the data I need.

My Express code:

router.post('/post', (req, res) => {
    console.log('yep !')
});

How to retrieve data from the dataPush variable?

Answer 1

Your fetch request. Remove quotation marks on variable being passed and perhaps pass as JSON

fetch(postIdUrl, {
  method: "POST",
  body: JSON.stringify({ "data": dataPush }),
  headers: { "Content-Type": "application/json" }
})

Your endpoint

router.post('/post', (req, res) => {
    console.log(req.body)
});