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Node.js endpoint ampersand is getting appended when making an ajax call

I've the below code which I'm using to hit a node.js endpoint. However when it is getting hit, the endpoint URL appends an & to it like this,
http://localhost:3004/expenses/?q=&12/02/2014
Hence I'm not getting the desired result back.
Here is how my code looks like,
$('#myForm').on('submit', (e)=>{
e.preventDefault();
$.ajax({
type: 'GET',
url: 'http://localhost:3004/expenses/?q=',
processData: false,
data: $('#startDate').val(),
contentType: 'application/json',
success:(data, status)=>{
// alert(status);
},
error:()=>{
alert('problem');
}
})
})
Can someone shed some light?

The issue is most likely related to the processData: false telling jQuery to not format the data for the request, and the GET url already containing ? in it. Given that you are not giving the request json, I would suggest reducing your call to simplify the issue.
$.ajax({
type: 'GET',
url: 'http://localhost:3004/expenses/',
data: { q: $('#startDate').val() },
success:(data, status)=>{
// alert(status);
},
error:()=>{
alert('problem');
}
});
If you do not give the processData in the options, it will convert the data you give it to a query param for the request. Given that this is a GET request, it will generate the ?q=<value> for you. And as mentioned in the comments, you do not need contentType: application/json on the options as that is telling jQuery to put the content type on the request so the server knows you are sending it json in the body. Which you are not, :)

Sending ajax request by jquery doesn't working

I'm trying to send ajax request to api. My code is
$(".doit").click(function(){
console.log("GG");
$.ajax({
type: 'POST',
url: "localhost:8000/api/get-user/1",
data: {id:1},
success: function(res) {
console.log(res);
}
});
})
It's just a simple code. Everyone know. But it works in "console.log("GG"). Not working in ajax part.
I monitored the network traffic by firefox, but I ddin't see any network traffic.
Do you have any idea about that case?

Update your ajax URL as below
url: "http://localhost:8000/api/get-user/1",
or
url: "api/get-user/1",
Hope this will fix your issue

This is because you are specifying the port number, and also not including the scheme.
Simply removing your domain should be enough:
$(".doit").click(function(){
console.log("GG");
$.ajax({
type: 'POST',
url: "/api/get-user/1",
data: {id:1},
success: function(res) {
console.log(res);
}
});
})

The problem is that you do not specify the URL scheme. So, instead of localhost:8000/api/get-user/1 you should use //localhost:8000/api/get-user/1, or better specify just the relative path /api/get-user/1.

I think because your url in the same url as you want to make request and that didn't make you will see the network traffic. just using the different url will show the request ajax from the network traffic.
just try to change your url to this: https://jsonplaceholder.typicode.com/posts
and read about this further information: https://github.com/typicode/jsonplaceholder#how-to

JavaScript ajax, JSONP, Callback function to do something with data

Fellas,
I'm trying to do an ajax call to get some JSON. I can get around the cross origin issues in Chrome very easily but in IE the only way I got it working without throwing an error is using JSONP. My problem is that i don't know how to process the response. I can see that the call executes and it returns JSON in fiddler but how do i catch it and play with it in my code that's below.
$.support.cors = true;
function callAjaxIE(){
$.ajax({
type: 'GET',
async: true,
url: usageUrl,
dataType: 'jsonp',
crossDomain: true,
jsonp: false,
jsonpCallback: processDataIE,
// cache: false,
success: function (data) {
alert('success');
//processData(data)
},
error: function (e){
console.log(e);
}
}).done(function (data) {
alert('done');
});
function processDataIE(){
alert('processing data ie');
}
It works when i run it, it displays a message box saying 'processing data ie' but so what. How do i play with the results?
UPDATE:
So I've updated the code as per Quentin. It doesn't go into the 'success' block. It errors out with the following.
When i look at fiddler. The JSON is there. How do i get it?

Don't force the function name. That's a recipe for race conditions. Remove jsonpCallback: processDataIE. Let jQuery determine the function name.
Don't remove the callback parameter from the URL. Make the server read callback from the query string to determine which function to call. Remove jsonp: false,.
Use the success function as normal. (Get rid of processDataIE, that's what success is for).
Asides:
crossDomain: true is pointless. It tells jQuery that when it is using XHR (which you aren't) and the URL is pointing to the same origin (which it isn't) then it should not add extra headers in case the server does an HTTP redirect to a different origin.
async: true is pointless. That's the default, and JSONP requests can't be anything other than async anyway.
$.support.cors = true; is pointless at best and can be harmful. Remove it.
Don't override jQuery's detection of support for CORS by the browser. You can't make ancient browsers support CORS by lying to jQuery. You're using JSONP anyway, so CORS is irrelevant.
The above is the sensible, standard, robust solution.
If you want the quick hack that maintains all the bad practises you have in play, then just look at the first argument to processDataIE.

Javascript Cross domain URL request

Is it possible to send the cross domain URL request and read the response using JSONP?
Could you please give me some samples?
I am trying to send URL request to a different domain using xhr but couldn't read the response
Please help
Thanks in Advance

You can check with blow example:
$(document).ready(function(){
$.ajax({ // ajax call starts
//crossOrigin: true,
type: "GET",
url: 'http://www.google.com', // JQuery loads areas
dataType: 'json', // Choosing a JSON datatype
async: false,
success: function(data) // Variable data contains the data we get from serverside
{
console.log(data);
}
});
});

Jquery unable to get the response from WCF REST service

I have developed WCF rest service and deployed it on a link that can be accessed via the browser because its action is "GET".
I want to get that data using jQuery. I tried my best to get WCf get response using jQuery
but in vain. I also tried $.Ajax with 'jsonp' with no luck. Can any one help me?
The url is: http://www.lonestarus.com/AndroidApp/AndroidLocation.svc/RestService/getLatestLocation
You can check that url response by pasting url in browser.

You need to set Access-Control-Allow-Origin to value [*] in your response header.
this blog gives the more details how it can be done in WCF REST service
if you were to do this in Web API you could have just added
Response.Headers.Add("Access-Control-Allow-Origin", "*")
calling the service using a fiddle
$(function() {
$.ajax({
url: "http://www.lonestarus.com/AndroidApp/AndroidLocation.svc/RestService/getLatestLocation",
datatype: 'json',
type : 'get',
success: function(data) {
debugger;
var obj = data;
}
});
})​;​
I got the error
XMLHttpRequest cannot load
http://www.lonestarus.com/AndroidApp/AndroidLocation.svc/RestService/getLatestLocation.
Origin http://fiddle.jshell.net is not allowed by
Access-Control-Allow-Origin.

I can't make a cross domain example to show you but
$('#a').load('http://www.lonestarus.com/AndroidApp/AndroidLocation.svc/RestService/getLatestLocation​​​​​​​​​​​​​​​​​?callback=run');​
would work had those things been set.
Your service needs to either enable JSONP callbacks or set the Access-Control-Allow-Origin header for cross domain requests to work, or you need to run the script from the same domain. Given that your url says AndroidApp I'm thinking you want cross domain.

Sample code below:
$.ajax
(
{
type: 'GET',
url: http://www.lonestarus.com/AndroidApp/AndroidLocation.svc/RestService/getLatestLocation,
cache: false,
async: true,
dataType: 'json',
success: function (response, type, xhr)
{
window.alert(response);
},
error: function (xhr)
{
window.alert('error: ' + xhr.statusText);
}
}
);