node.js url search/query portion is empty

debugcn Published at Dev

user3368674

I am developing a website (client + server) that runs from the same machine. I haven't found any errors in chrome's developer tools, so I don't know where the problem is.

I try to POST a string from the client to the Node back-end, but upon performing

 url.parse(request.url, true).query

the result is empty.

Here is my client:

var xhttp = new XMLHttpRequest();

xhttp.open("POST", "http://localhost:8080/newComment", true);
xhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
xhttp.send("val=" + commentString);

My commentString is "hey there"

Here is my server:

var path = url.parse(request.url).pathname;
else if (path == "/newComment") {

    console.log("query: " + url.parse(request.url, true).body);
    //setNewComment(comment);

    response.writeHead(200, {
        'Content-Type': 'text/plain', 
        'Access-Control-Allow-Origin' : '*',
        'Access-Control-Allow-Methods': 'GET,PUT,POST,DELETE'
        }); // enable cors
    response.write("Recieved request");
    response.end();
}

And I am at the website

file:///C:/Users/.../website.html?name=hey+there

So I'd like my Node server to print out "query: hey there" but instead it prints "query undefined"

Efi Shtainer

You are trying to access the body, and this is right, yet the url doesn't hold the body's content, you should either accumulate it by listening to 'data' events:

let body = [];
request.on('data', (chunk) => {
            body.push(chunk);
           }).on('end', () => {
                 body = Buffer.concat(body).toString();
                 // at this point, `body` has the entire request body stored in it as a string
                               });

or use "express" and "body-parser".

1.Go to the request body section: https://nodejs.org/en/docs/guides/anatomy-of-an-http-transaction/

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