Calling Web Service from a Javascript file

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Hi,

I am trying to call a web method of a web service from a simple javascript file. This javascript file could be added to any other project and it needs to talk to database and fetch some data.
I do not want to add a webservice.htc file or have a web reference as this will totally nullify the above goal.
All I would like to know is, is there a better and straight forward way to call a ASP.Net 3.5 web service from a javascript?
If so, please let me know

Thanks,
Raam
[Email removed to avoid spam]

Posted 6-Oct-10 6:53am

Raam_pl

Updated 6-Oct-10 9:13am

Sandeep Mewara

v2

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5 solutions

Solution 2

hi,

googling for "javascript xmlhttp".
it might help you.

Posted 6-Oct-10 11:49am

aidin Tajadod

Solution 4

XMLHttpRequest() works within my domain. If I try to access a different domain URL, the request isn't going?
Please let me know

Thanks,
Raam

Posted 7-Oct-10 4:33am

Raam_pl

Comments

Dylan Morley 7-Oct-10 11:14am

That's to prevent cross domain scripting and is part of the same origin policy of javascript

https://developer.mozilla.org/En/Same_origin_policy_for_JavaScript

You can proxy your javascript call to a web service within your domain, then have that web service call the required resource on the other domain

Solution 5

Hi,

Could anyone please let me know how to call a different domain from my native domain's javascript?
The issue is:
1. I have a javascript file hosted on say domain called 'a'
2. I have a aspx file hosted on domain 'b'
3. I need to call domain b's aspx from my domain a's javascript

I tried all the possible ways including cross domain cookie and XMLHttpRequest

Since the approach should be a light weight, we do not want to have a script manager and point the path reference to domain b

Please let me know ASAP

Thanks,
Raam

Posted 11-Oct-10 2:41am

Raam_pl

Solution 6

Look here

http://snook.ca/archives/javascript/cross_domain_aj[^]

Cross domain proxy is one I've used a number of times.

So, design a method on your web server that calls the remote domain resource.

Your javascript calls your web method, which in turn calls the remote resource. You are proxying the data through your web server and you can call your method from script because it's within the same domain.

Posted 13-Oct-10 22:39pm

Dylan Morley

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shakil0304003 · Accepted Answer · 2010-10-06T08:00:00

you can call web service by ajax.
Example:

JavaScript

var J = jQuery.noConflict();

function PreLoadMouseOverImages() {
    var i = 0;
    J.ajax({
        type: "GET",
        url: "webservice1.ashx",
        success: function (msg) {

            //msg is the response data
            // you can do your work here.
        }
    });
}

Calling Web Service from a Javascript file

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