How to get data request from link url in javascript?

Question

I want to load data from this url: http://gateway.fpts.com.vn/monitor/realtime/?s=aaa using Javascript.

This url returns data in my browser as shown below:

Here is the code I tried:

<html>
   <head>
      <title>The jQuery Example</title>
      <script type = "text/javascript" src = "http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
   </head>
   <body>
      <div id= "stage"></div>
        <script type = "text/javascript" language = "javascript">
         var url = "http://gateway.fpts.com.vn/monitor/realtime/?s=aaa"
        $.ajax({
          url: url,
          cache: false,
          method: "GET",
        })
          .done(function( html ) {
            $( "#stage" ).append( html );
          });
      </script>
   </body>
</html>

But I am getting this Error:

XMLHttpRequest cannot load http://gateway.fpts.com.vn/monitor/realtime/?s=aaa&_=1465298988417. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access.

Read about jQuery.ajax() here api.jquery.com/jquery.ajax.

void
– void

2016-06-07 11:19:20 +00:00
Commented Jun 7, 2016 at 11:19 — void
– void, Commented Jun 7, 2016 at 11:19

Community · Accepted Answer · 2017-05-23 12:08:26Z

2

You are making a cross-origin http request as you are requesting data from a domain http://gateway.fpts.com.vn which is different form that of your html file shown in question, say it http://www.requesting-server.com

To allow cross-origin resource sharing, you should set following header on the requested server http://gateway.fpts.com.vn.

To allow requests from any domain, use * as a wildcard (less secure):

Access-Control-Allow-Origin: *

or

To allow requests from a particular domain:

Access-Control-Allow-Origin: http://www.requesting-server.com

You can also check this post which addresses the same issue.

edited May 23, 2017 at 12:08

CommunityBot

11 silver badge

answered Jun 7, 2016 at 11:51

Ajeet Shah

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5 Comments

Ta No Bi Over a year ago

I tried same: developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS error 25 Uncaught ReferenceError: handler is not defined

Ajeet Shah Over a year ago

Can you tell me how you are setting the Access-Control-Allow-Origin: * header at the server http://gateway.fpts.com.vn? You can share code / screenshot or relevant information in the question. Do not delete the original question text. Just at the bottom add details with a "Edit:" note.

Ta No Bi Over a year ago

Which means that I have to set up header on the server, the server accepts CORS returns response?

Ta No Bi Over a year ago

Hi @Orions! I use MVC. I write a function getData: make request with WebRequest, and use StreamReader read data form url. I pass data from controller to view :). It same: stackoverflow.com/questions/10565090/…

Ta No Bi Over a year ago

Orions! Thank you so much!

olezhek · Accepted Answer · 2016-06-07 12:22:58Z

1

In addition to @Orions comment (https://stackoverflow.com/a/37678620/633781), you need to provide following header in your request to a server, to make it work:

Origin: <your domain, e.g. http://example.com>

As far as I remember, jQuery does this automatically for you. Nevertheless, you can check the request headers in your browser's Dev tools to make sure it does. You can add your own headers to requests made with jQuery, though (https://api.jquery.com/jquery.ajax/)

answered Jun 7, 2016 at 12:22

olezhek

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1 Comment

Ajeet Shah Over a year ago

You are right in "jQuery does this automatically for you"

Dhaval Soni · Accepted Answer · 2016-06-07 11:27:19Z

0

You have to import jquery library from below link to use this code. https://jquery.com/download/

$.get( "http://gateway.fpts.com.vn/monitor/realtime/?s=aaa", function( data ) {
  console.log(data);
});

answered Jun 7, 2016 at 11:27

Dhaval Soni

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2 Comments

Ta No Bi Over a year ago

Hi @Dhval thank you for answer! But have a error:"XMLHttpRequest cannot load gateway.fpts.com.vn/monitor/realtime/?s=aaa&_=1465298988417. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access."

Dhaval Soni Over a year ago

Please prefer this for No 'Access-Control-Allow-Origin' stackoverflow.com/questions/28547288/…

Bjørn Nyborg · Accepted Answer · 2016-06-07 11:30:17Z

0

You can make an ajax request an then get the data, something like this:

$.ajax({
  url: "http://gateway.fpts.com.vn/monitor/realtime/?s=aaa",
}).done(function(data) {
  $("body").html(data);
});

Make sure to include jquery if you use this.

answered Jun 7, 2016 at 11:30

Bjørn Nyborg

1,0038 silver badges18 bronze badges

2 Comments

Ta No Bi Over a year ago

Hi @Bjørn Nyborg thank you for answer! But have a error:"XMLHttpRequest cannot load gateway.fpts.com.vn/monitor/realtime/?s=aaa&_=1465298988417. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access."

Bjørn Nyborg Over a year ago

That is because its a cross-domain request. Try adding dataType: 'jsonp',

Rohit416 · Accepted Answer · 2016-06-07 11:33:25Z

0

Because your data is in JSON form, you can use a shorthand for that using $.getJson(). Download jQuery library and include on top of every script. Then place the following snippet in a separate script below the jQuery library.

(function($){
  $(function(){
      $.getJson( "http://gateway.fpts.com.vn/monitor/realtime/?s=aaa", function(data) {        
          console.log(data);
          // do something with data....        
      });
  });
})(jQuery || window.jQuery);

answered Jun 7, 2016 at 11:33

Rohit416

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3 Comments

Ta No Bi Over a year ago

Hi @Rohit416 thank you for answer! but have error: Uncaught TypeError: $.getJson is not a function

Rohit416 Over a year ago

Have you included jQuery on top?

Ta No Bi Over a year ago

I included on top.

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