Client Side code for SharePoint using javascript

Hi friends,

Here I will write all basic client side code for SharePoint using JavaScript.


To add Item in SharePoint list

function AddItem(){
    var clientContext = new SP.ClientContext();   
    var entitylist = clientContext.get_web().get_lists().getByTitle("List1");
    var itemCreateInfo = new SP.ListItemCreationInformation();
    var oListItem = entitylist.addItem(itemCreateInfo);  
   
    oListItem.set_item('Title', 'Test Title');
    oListItem.set_item('Body'', 'String field added.');
    oListItem.update();

    clientContext.load(oListItem);
    clientContext.executeQueryAsync(
        Function.createDelegate(this, function (sender, args) {
             alert("Item Added.");
        }),
        Function.createDelegate(this, function (sender, args) {
            console.log('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
        }));
}

To update "DateTime" field in SharePoint list.

code within AddItem() function:

    var dt= new Date();   
    oListItem.set_item('LoginDateTime',dt.toGMTString());
    oListItem.update();


 To Update "User" field in SharePoint list.

   oListItem.set_item('User', clientContext.get_web().get_currentUser());
   oListItem.update();


I will update my this blog post from time to time. So keep in touch...

To get querystring variable of Parent Page URL from iframe

To get Parent page url from iframe:

string url = HttpContext.Current.Request.UrlReferrer.OriginalString.ToString();

To get QueryString from url of parent page, use:

string query = HttpContext.Current.Request.UrlReferrer.Query;

To get values of parameters from url use:

string[] queryStringParaArray = HttpContext.Current.Request.UrlReferrer.Query.Substring(1).Split('=');

     if (queryStringParaArray.Length > 0)

     {

        foreach (var para in queryStringParaArray)

             if (para == "EventId")

                 int eventId = Convert.ToInt32(queryStringParaArray[1]);

     }