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Delete Content Type From List in SharePoint using REST API

The example in this topic show how to use REST API to Delete Content Type From List in SharePoint

REST-API is based on OData (Open Data) Protocol and hence it doesn't require any dll or JS library to run the commands on the SharePoint objects.
REST-API calls require proper end-point URL and proper Header implementation in your REST call.

How to use SharePoint REST API?

Note: This is just a sample, you can go ahead with your implementation.
You can also use this method in your SPFx Component.
Open your Site. Create a webpart page.
Put a Content Editor Web part and a Script Editor Web part on it.

Webpart page content editor and scipt editor

I have added below Html in Content Editor webpart. You can replace MainFunction with your actual method name.
<button onclick="MainFunction();" type="button">Click me</button>
And below references in Script Editor Webpart. ScriptFile.js is a JavaScript file where you can keep below function i.e. your actual logic.
<script src="https://MyServer/sites/SiteCollection/style library/js/ScriptFile.js"></script>
Once you are done with setting your page, click on the button and your method should get executed.

function DeleteContentTypeFromList()
{
GetListContentTypeId();
}
function GetListContentTypeId()
{
$.ajax
({
// _spPageContextInfo.webAbsoluteUrl - will give absolute URL of the site where you are running the code.
// You can replace this with other site URL where you want to apply the function
url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/getByTitle('List%20Name')/contenttypes?$filter=Name eq 'Content Type Title'&$top=1&$select=StringId",
type: "GET",
async:false,
headers:
{
// Accept header: Specifies the format for response data from the server.
"Accept": "application/json;odata=verbose",
},
success: function (data, status, xhr) {
var dataresults = data.d.results;
DeleteContentTypeFromListUsingContentTypeId(dataresults[0]["StringId"]);
},
error: function (xhr, status, error) {
console.log("Failed");
}
});
}
function DeleteContentTypeFromListUsingContentTypeId(ContentTypeId)
{
$.ajax
({
// _spPageContextInfo.webAbsoluteUrl - will give absolute URL of the site where you are running the code.
// You can replace this with other site URL where you want to apply the function
url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/getByTitle('List%20Name')/contenttypes('" + ContentTypeId +"')",
type: "POST",
headers:
{
// Accept header: Specifies the format for response data from the server.
"Accept": "application/json;odata=verbose",
//Content-Type header: Specifies the format of the data that the client is sending to the server
"Content-Type": "application/json;odata=verbose",
// IF-MATCH header: Provides a way to verify that the object being changed has not been changed since it was last retrieved.
// "IF-MATCH":"*", will overwrite any modification in the object, since it was last retrieved.
"IF-MATCH": "*",
//X-HTTP-Method: The MERGE method updates only the properties of the entity , while the PUT method replaces the existing entity with a new one that you supply in the body of the POST
"X-HTTP-Method": "DELETE",
// X-RequestDigest header: When you send a POST request, it must include the form digest value in X-RequestDigest header
"X-RequestDigest": $("#__REQUESTDIGEST").val()
},
success: function (data, status, xhr) {
console.log("Success");
},
error: function (xhr, status, error) {
console.log("Failed");
}
});
}

Similar examples using different APIs:

Thank you for reading this article. This code was tested in SharePoint 2013

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