I am playing around with nodejs, creating a simple server, also handles some ajax. When I go to localhost:4000 the page does not render, instead an empty file is automatically downloaded. It is named "download file", zero byte and no extension.
I think my client and my server are really simple. Sorry for the generic question but I fail to understand why this is happening.
Thanks in advance
Client - a simple form and a XHR that sends json-type data
<html>
<head> <title>Chatrooms</title> </head>
<body>
<form id="fruitform" method="post" action="/">
<div class="table">
<div class="row">
<div class="cell label">Bananas:</div>
<div class="cell"><input name="bananas" value="2"/></div>
</div>
<div class="row">
<div class="cell label">Apples:</div>
<div class="cell"><input name="apples" value="5"/></div>
</div>
<div class="row">
<div class="cell label">Cherries:</div>
<div class="cell"><input name="cherries" value="20"/></div>
</div>
<div class="row">
<div class="cell label">Total:</div>
<div id="results" class="cell">0 items</div>
</div>
</div>
<button id="submit" type="button">Submit Form</button>
</form>
<div id="results"></div>
<div id="de"></div>
</body>
</html>
<script type="text/javascript">
document.getElementById("submit").onclick = handleButtonPress;
function handleButtonPress(e) {
e.preventDefault();
var formData = "";
//gather all input values in a json type string
var inputElements = document.getElementsByTagName("input");
for (var i = 0; i < inputElements.length; i++) {
formData += inputElements[i].name + "=" + inputElements[i].value + "&";
}
formData = formData.slice(0, -1);
var hr = new XMLHttpRequest();
hr.open("POST", "/formHandler", true);
hr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
hr.onreadystatechange = function() {
if(hr.readyState == 4 && hr.status == 200) {
document.getElementById("results").innerHTML = hr.responseText;
}
}
hr.send(formData);
}
</script>
Server
//dependencies
var http = require ('http');
var fs = require ('fs');
var path = require ('path');
var mime = require ('mime');
var qs = require('querystring');
//this is the http server
var server = http.createServer(function (request, response){
var filePath = false;
if (request.url == '/'){
filePath='public/index.html';//default static file
}
if (request.url == '/formHandler'){//handle XHR
if (request.method=="POST"){
var rrr="rrr";
response.writeHead(200,{"content-type":"text/plain"});
response.write(rrr);
response.end(rrr);
}
}
else{
filePath='public'+request.url;//set relative file path
}
var absPath = './'+filePath;
serveStatic(request, response, cache, absPath);//serve the static file
});
server.listen(4000, function(){
console.log("Chatrooms server on port 4000");
}
);
//read static files
function serveStatic(request, response,cache, absPath){
fs.readFile(absPath, function(err, data){
sendFile(request, response, absPath, data);
})
}
//serve file data
function sendFile(request, response, filePath, fileContents){
response.writeHead(
200,{"content-type":mime.lookup(path.basename(filePath))}
);
response.end(fileContents);
}
UPDATE If I remove the following part from the server, it works fine. Still cannot understand what is going on
if (request.url == '/formHandler'){
console.log("inside ajax if");
console.log("inside formPro");
if (request.method=="POST"){
console.log("inside second ajax if");
var rrr="rrr";
response.writeHead(200,{"content-type":"text/plain"});
response.write(rrr);
response.end(rrr);
console.log("finished sending rrr");
}
}
