Introduction
The goal of this article is to provide how to perform basic create, read, update, and delete (CRUD) operations on lists and list items with the JSOM. I have explored the CRUD operation using Web Service in my previous article.
Now, I will demo all the operations on list items, including retrieve, create, update and delete on list items.
Retrieve the list items
Here is the main code in detail:
- function retriveListItem()
- {
- //Get the current context
- var context = new SP.ClientContext();
- var list = context.get_web().get_lists().getByTitle(‘companyInfo’);
- var caml = new SP.CamlQuery();
- caml.set_viewXml("<View><Query><OrderBy><FieldRef Name=’Company’ Ascending='TRUE' /></OrderBy></Query></View>");
- returnedItems = list.getItems(caml);
- context.load(returnedItems);
- context.executeQueryAsync(onSucceededCallback, onFailedCallback);
- }
- function onSucceededCallback(sender, args)
- {
- var enumerator = returnedItems.getEnumerator();
- //Formulate HTML from the list items
- var MainResult = 'Items in the Divisions list: <br><br>';
- //Loop through all the items
- while (enumerator.moveNext())
- {
- var listItem = enumerator.get_current();
- var companyName = listItem.get_item(“Company ");
- var Industry = listItem.get_item(“Industry ");
- MainResult += MainResult + companyName + "-" + Industry + "\n";
- }
- //Display the formulated HTML in the displayDiv element
- displayDiv.innerHTML = MainResult;
- }
- //This function fires when the query fails
- function onFailedCallback(sender, args)
- {
- //Formulate HTML to display details of the error
- var markup = '<p>The request failed: <br>';
- markup += 'Message: ' + args.get_message() + '<br>';
- //Display the details
- displayDiv.innerHTML = markup;
- }
- }
- }
Here is the main code in detail:
- function AddListItem()
- {
- var listTitle = "companyInfo";
- //Get the current client context
- context = SP.ClientContext.get_current();
- var airportList = context.get_web().get_lists().getByTitle(listTitle);
- //Create a new record
- var listItemCreationInformation = new SP.ListItemCreationInformation();
- var listItem = airportList.addItem(listItemCreationInformation);
- //Set the values
- Var industryVal = $("#Industry").val();
- var Company = $("#Company").val();
- listItem.set_item('Industry', +industryVal);
- listItem.set_item('Company', +new item);
- listItem.update();
- context.load(listItem);
- context.executeQueryAsync(AddListItemSucceeded, AddListItemFailed);
- }
- function AddListItemSucceeded()
- {
- retriveListItem();
- }
- function AddListItemFailed(sender, args)
- {
- alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
- }
Here is the main code in detail:
- function updateListItem()
- {
- var ListName = "companyInfo";
- var context = new SP.ClientContext.get_current(); // the current context is taken by default here
- //you can also create a particular site context as follows
- var lstObject = context.get_web().get_lists().getByTitle(ListName);
- this.lstObjectItem = lstObject.getItemById(1);
- Var industryVal = $("#Industry").val();
- var Company = $("#Company").val();
- lstObjectItem.set_item('Industry', “+industryVal + ”);
- lstObjectItem.set_item('Company', ”+Company + ”);
- lstObjectItem.update();
- context.executeQueryAsync(Function.createDelegate(this, this.onSuccess), Function.createDelegate(this, this.onFailure));
- }
- function onSuccess()
- {
- retriveListItem();
- }
- function onFailure(sender, args)
- {
- alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
- }
Here is the main code in detail:
- function deleteListItem()
- {
- var listTitle = "companyInfo";
- //get the current client context
- context = SP.ClientContext.get_current();
- var airportList = context.get_web().get_lists().getByTitle(listTitle);
- //get the list item to delete
- var listItem = airportList.getItemById(1);
- //delete the list item
- listItem.deleteObject();
- context.executeQueryAsync(DeleteItemSucceeded, DeleteItemFailed);
- }
- function DeleteItemSucceeded()
- {
- retriveListItem();
- }
- function DeleteItemFailed(sender, args)
- {
- alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
- }
In this article we explored SharePoint JSOM for CRUD operations on list items level. Hope it will be helpful.
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