JSOM Get list content types

<div id='codeeditor1-template'> <script> SP.SOD.executeFunc('sp.js', 'SP.ClientContext', function(){ getContentTypes("http://demo.sobiens.com","Test list") }); function getContentTypes(site_url,name_of_the_library){ var ctx = new SP.ClientContext(site_url); var web = ctx.get_web(); list = web.get_lists().getByTitle(name_of_the_library); // You can include any property of the SP.ContentType object (sp.js), for this example we are just getting the name ctx.load(list,'ContentTypes.Include(Name)'); ctx.executeQueryAsync(onQuerySucceeded, onQueryFailed); } function onQuerySucceeded(sender, args) { // var list is the one that we used in function "getContentTypes" var contentTypesEnumerator = (list.get_contentTypes()).getEnumerator(); while (contentTypesEnumerator.moveNext()) { var contentType = contentTypesEnumerator.get_current(); alert(contentType.get_name()); } } function onQueryFailed(sender, args) { alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace()); } </script> </div>