I deployed an App SharePoint hosted.
I am using SP.RequestExecutor and it is working fine on SharePoint premise.
but on SharePoint online it is not working.
I added the library using this: $.getScript("/_layouts/15/SP.RequestExecutor.js");
Can I use that library also in SharePoint online?

This is my CODE :

var createitem = new SP.RequestExecutor("/");
    url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/GetByTitle('MyList')/items('" + id + "')/AttachmentFiles/add(FileName='" + file.name + "')",
    method: "POST",
    binaryStringRequestBody: true,
    body: contents2,
    success: function (data) {
    error: function (msg) {
    state: "Update"
  • What error are you receiving when it fails?
    – wjervis
    Apr 18, 2014 at 13:56
  • Nothing, I try to access to the msg.body, msg.status but they are undefined
    – Nk SP
    Apr 18, 2014 at 13:59
  • Where does it fail? The new SP.RequestExecutor("/"); or the createitem.executeAsync({...?
    – wjervis
    Apr 18, 2014 at 14:03
  • It fails in the executeAsync, I can see the alert in the error callback.
    – Nk SP
    Apr 18, 2014 at 14:05
  • I'm looking at a SP hosted app I have working for SPO, and I'm using the app web url to create the SP.RequestExecutor. My REST url is quite different as well: appweburl + "/_api/SP.AppContextSite(@target)/web/lists/getbytitle('Communication%20Log')/items?$select=Title,Date1&$orderby=Date1 desc&$top=5&@target='" + encodeURIComponent(hostweburl) + "'" hostweburl being the url for the sharepoint online site, appweburl being the app's url.
    – wjervis
    Apr 18, 2014 at 14:06

1 Answer 1


I used this when I first created my app. First, you need both the app web url and the host web url:

var hostweburl = decodeURIComponent( getQueryStringParameter("SPHostUrl") );
var appweburl = decodeURIComponent( getQueryStringParameter("SPAppWebUrl") );

Then you need to load the SP.RequestExecutor.JS file, which I did differently than what was in the link:

var scriptbase = hostweburl + "/_layouts/15/";

$.getScript(scriptbase + "SP.Runtime.js",
    function () {
        $.getScript(scriptbase + "SP.js",
            function () { $.getScript(scriptbase + "SP.RequestExecutor.js", execCrossDomainRequest); }

execCrossDomainRequest is the function in which I executed the cross domain request. In my function, I was retrieving the five most recent items from a list called "Communication Log":

function execCrossDomainRequest() {
    var context;
    var factory;
    var appContextSite;

    context = new SP.ClientContext(appweburl);
    factory = new SP.ProxyWebRequestExecutorFactory(appweburl);
    appContextSite = new SP.AppContextSite(context, hostweburl);

    var executor = new SP.RequestExecutor(appweburl);

                appweburl +
                    "/_api/SP.AppContextSite(@target)/web/lists/getbytitle('Communication%20Log')/items?$select=Title,Date1&$orderby=Date1 desc&$top=5&@target='" +
                        encodeURIComponent(hostweburl) + "'",
            method: "GET",
            headers: { "Accept": "application/json; odata=verbose" },
            success: successHandler,
            error: errorHandler

I'm sure you can piece the rest together. This was done when I was fairly fresh with both SharePoint apps and javascript, so it may be improved.

  • Thanks, I changed my url request (added @target).It is working fine on-premise, but it is not working on Online :/
    – Nk SP
    Apr 23, 2014 at 8:20
  • I created new SP.RequestExecutor("/") but it needs the appweburl parameter. Strange that it was working on-premise. Thanks
    – Nk SP
    Apr 23, 2014 at 9:14
  • Why in your function you created context, factory and appContextSite instances when you didnt use them anywhere?
    – michalh
    May 26, 2017 at 11:48
  • @MichalHainc See the last comment under the code block. I suppose I ought to update this answer when I have a chance.
    – wjervis
    May 26, 2017 at 12:17
  • @wjervis Would be helpfull ... Im struggling with this for 2 days, I'd like to use the appContextSite & context objects to work with the JSOM and manipulate data on the hostWeb but all I am getting is Access denied
    – michalh
    May 26, 2017 at 12:30

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