SharePoint 2013 introduces a Representational State Transfer (REST) service that is comparable to the existing SharePoint client object models. This allows developers to interact remotely with SharePoint data using any technology that supports REST web requests. This means that developers can perform Create, Read, Update, and Delete (CRUD) operations from their apps for SharePoint, solutions, and client applications, using REST web technologies and standard Open Data Protocol (OData) syntax. In this article you will see the following:
<%-- The markup and script in the following Content element will be placed in the <head>of the page --%>
<asp:Content ContentPlaceHolderID="PlaceHolderAdditionalPageHead" runat="server">
<script type="text/javascript" src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.9.1.min.js"></script>
<script type="text/javascript" src="/_layouts/15/sp.runtime.js"></script>
<script type="text/javascript" src="/_layouts/15/sp.js"></script>
<!-- Add your CSS styles to the following file -->
<link rel="Stylesheet" type="text/css" href="../Content/App.css" />
<!-- Add your JavaScript to the following file -->
<script type="text/javascript" src="../Scripts/App.js"></script>
</asp:Content>
<%-- The markup in the following Content element will be placed in the TitleArea of the page --%>
<asp:Content ContentPlaceHolderID="PlaceHolderPageTitleInTitleArea" runat="server">Page Title</asp:Content>
<%-- The markup and script in the following Content element will be placed in the <body>of the page --%>
<asp:Content ContentPlaceHolderID="PlaceHolderPageTitleInTitleArea" runat="server">REST API Examples</asp:Content>
<%-- The markup and script in the following Content element will be placed in the <body>of the page --%>
<asp:Content ContentPlaceHolderID="PlaceHolderMain" runat="server">
<div>
<p>
<b>Active Web Feature ID's</b>
<br />
<select style="height:300px; width:310px" multiple="multiple" id="selectActiveFeatures"></select>
</p>
</div>
</asp:Content>
'use strict';
var hostweburl;
var appweburl;
// Load the required SharePoint libraries.
$(document).ready(function () {
//Get the URI decoded URLs.
hostweburl = decodeURIComponent(
getQueryStringParameter("SPHostUrl"));
appweburl = decodeURIComponent(
getQueryStringParameter("SPAppWebUrl"));
// Resources are in URLs in the form:
// web_url/_layouts/15/resource
var scriptbase = hostweburl + "/_layouts/15/";
// Load the js file and continue to load the page with information about the active features.
// SP.RequestExecutor.js to make cross-domain requests
$.getScript(scriptbase + "SP.RequestExecutor.js", loadPage);
});
//Utilities
// Retrieve a query string value.
// For production purposes you may want to use a library to handle the query string.
function getQueryStringParameter(paramToRetrieve) {
var params = document.URL.split("?")[1].split("&");
for (var i = 0; i < params.length; i = i + 1) {
var singleParam = params[i].split("=");
if (singleParam[0] == paramToRetrieve) return singleParam[1];
}
}
function loadPage() {
getActiveFeatures();
}
//Retrieve all of the active web features
function getActiveFeatures() {
var executor;
// Initialize the RequestExecutor with the app web URL.
executor = new SP.RequestExecutor(appweburl);
executor.executeAsync({
url: appweburl + "/_api/SP.AppContextSite(@target)/web/features?@target='" + hostweburl + "'",
method: "GET",
headers: {
"Accept": "application/json; odata=verbose"
},
success: getActiveWebFeaturesSuccessHandler,
error: getActiveWebFeaturesErrorHandler
});
}
//Populate the selectActiveFeatures control after retrieving all of the active web featues.
function getActiveWebFeaturesSuccessHandler(data) {
var jsonObject = JSON.parse(data.body);
var selectActiveFeatures = document.getElementById("selectActiveFeatures");
if (selectActiveFeatures.hasChildNodes()) {
while (selectActiveFeatures.childNodes.length >= 1) {
selectActiveFeatures.removeChild(selectActiveFeatures.firstChild);
}
}
var results = jsonObject.d.results;
for (var i = 0; i < results.length; i++) {
var selectOption = document.createElement("option");
selectOption.value = results[i].DefinitionId;
selectOption.innerText = results[i].DefinitionId;
selectActiveFeatures.appendChild(selectOption);
}
}
function getActiveWebFeaturesErrorHandler(data, errorCode, errorMessage) {
alert("Could not get Active Web Features: " + errorMessage);
}
Thus in this article you saw how to get all active web features using the REST API in SharePoint 2013 Online.