This example shows how to retrieve an ID of a newly created item using SharePoint REST API.
Note :
listName - This variable contains name of you list.
newItemBody - This will be your request body for adding new item in list.
e.g. var newItemBody = { __metadata: { 'type': 'SP.Data.MyListNameItem' }, Title: 'Some title value' };
function CreateListItemWithDetails(listName, newItemBody) {
var item = newItemBody;
return $.ajax({
url: _spPageContextInfo.siteAbsoluteUrl + "/_api/web/lists/getbytitle('" + listName + "')/items",
type: "POST",
contentType: "application/json;odata=verbose",
data: JSON.stringify(item),
headers: {
"Accept": "application/json;odata=verbose",
"X-RequestDigest": $("#__REQUESTDIGEST").val(),
"content-Type": "application/json;odata=verbose"
}
});
}
CreateListItemWithDetails(listName, newItemBody)
.then(function(data){
//success callback
var NewlyCreatedItemId = data.d.ID;
}, function(data){
//failure callback
});