What is the correct way to pass parameter to get JSON by URL?

Question

JavaScript

Hello.

By sending ajax request to url trying to get json
works fine if done like this

http://localhost:8000/Forward?URL=dataset/employees.jsp?selected_region=Краснодар

trying to implement in javascript

$.getJSON( "Forward?URL=dataset/employees.jsp", { selected_region: selected } )
            .done(function( json ) {
                console.log("Список возможных позиций");
                console.log(json);
            })
            .fail(function( jqxhr, textStatus, error ) {
                var err = textStatus + ", " + error;
                console.log( "Request Failed: " + err );
            });

as a result

Request Failed: parsererror, SyntaxError: Unexpected token < in JSON at position 24

What is wrong and how to solve the problem?

Answer 1

In the browser console, check what exactly is returned by the request. It looks like it's html instead of JSON.
And it’s better to add a leading slash to the address so that it works not only on the main one.
$.getJSON( "/Forward?URL=dataset/employees.jsp"...