Add Content Type In Existing SharePoint List Using JSOM

In this blog I would like to share the code for adding the content type in existing SharePoint list using SP hosted app model.

Write the below code on your *.js file,

//get Current Context
var context = SP.ClientContext.get_current();
// This code runs when the DOM is ready and creates a context object which is needed to use the SharePoint object model
$(document).ready(function () {
console.log("page loading...");
$("#btnCreate").click(function () {
addContenType();
});
});

//This method is used to add the content type on exisiting list.
function addContenType() {
//Get host web URL
var hostWebUrl = decodeURIComponent(manageQueryStringParameter('SPHostUrl'));
//get app context using host web url
var appCtxSite = new SP.AppContextSite(context, hostWebUrl);
//get current web
var currentWEB = appCtxSite.get_web();
//get list from host web
var lists = currentWEB.get_lists();
//get rootweb
var rootWeb = appCtxSite.get_site().get_rootWeb();
//Get all content types from root web site
var allContentTypeColl = rootWeb.get_contentTypes();
//load the web , lists & content types
context.load(rootWeb);
context.load(allContentTypeColl);
context.load(lists);
context.executeQueryAsync(function () {
var CTypeID;
var contentTypeName = "customTestCT";
//Get the Content type ID , if we know content type id we dont want to get the id again
var contentTypeEnum = allContentTypeColl.getEnumerator();
while (contentTypeEnum.moveNext()) {
var currentCT = contentTypeEnum.get_current();
if (currentCT.get_name() == contentTypeName) {
CTypeID = currentCT.get_stringId();
break;
}
}
var testList = appCtxSite.get_web().get_lists().getByTitle("SampleList1");
//Enable the content type in custom list
testList.set_contentTypesEnabled(true);
testList.update();
context.load(testList);
var webContentTypes = appCtxSite.get_site().get_rootWeb().get_contentTypes();
var listCollectionCT = testList.get_contentTypes();
var customCT = webContentTypes.getById(CTypeID);
//then add the existing content type using content type id
listCollectionCT.addExistingContentType(customCT);
//then load the list collection content types
context.load(listCollectionCT);
var folder = testList.get_rootFolder();
context.load(folder, 'ContentTypeOrder');
context.executeQueryAsync(function () {
//ordered the content type folder.set_uniqueContentTypeOrder(folder.get_contentTypeOrder().reverse());
folder.update();
context.executeQueryAsync(

function () {
console.log("Content type was added");

},

function () {
console.log("Error in Adding Content Type" + args.get_message());

});
}, function (sender, args) { onfail(sender, args); });
}, function (sender, args) { onfail(sender, args); });
}

// This function is executed if the above call fails
function onfail(sender, args) {
alert('Failed to add content type in list. Error:' + args.get_message());
}

// this method used split the query string
function manageQueryStringParameter(paramToRetrieve) {
var params = document.URL.split("?")[1].split("&");
var strParams = "";
for (var i = 0; i < params.length; i = i + 1) {
var singleParam = params[i].split("=");
if (singleParam[0] == paramToRetrieve) {
return singleParam[1];
}
}
}

Note - Please make sure to provide the permission to web in app manifest file

 

Finally custom content type will be added successfully on your existing list.

 

Summary

 

In this blog we have explored how to add the content type on existing SharePoint list form SharePoint hosted app model with JavaScript object model.