In this blog post I will entirely focus on Getting List items, Updating List items and Deleting List items using SharePoint Web Services. The code uses Javascript to Retrieve items and makes an ajax call to SharePoint Web Services. In this script, I have Update /Delete method and UpdateListem/deleteListItems method.

Update SharePoint List item

<script type="text/javascript">

function update() {

var UpdateNewItemXml = "<Batch OnError='Continue' ListVersion='1'>" + "<Method ID=\"1\" Cmd=\"Update\">" + "<Field Name='ID'>2</Field>" + "<Field Name='Name'>Mack</Field>" + "</Method>" + "</Batch>";

FeedbackHTTP = new ActiveXObject("MSXML2.XMLHTTP.3.0");

FeedbackHTTP.Open("POST", "http://spsrvr:800/sites/test/_vti_bin/lists.asmx", false);

FeedbackHTTP.setRequestHeader("Content-Type", "text/xml; charset=utf-8");

FeedbackHTTP.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/sharepoint/soap/UpdateListItems");

var strSOAP = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" + "<soap:Envelopexmlns:xsi=\"http://www.w3.org/2001/XMLSchemainstance\"xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">" + "<soap:Body>" + "<UpdateListItems xmlns=\"http://schemas.microsoft.com/sharepoint/soap/\">" + "<listName>MyList</listName>" + "<updates>" + UpdateNewItemXml + "</updates>" + "</UpdateListItems>" + "</soap:Body>" + "</soap:Envelope>";

FeedbackHTTP.Send(strSOAP);

alert("Thank you! your suggestion has been Updated successfully.");

}

</script>



Delete SharePoint List item

<script type="text/javascript">

function Delete() {

var UpdateNewItemXml = "<Batch OnError='Continue' ListVersion='1'>" + "<Method ID=\"1\" Cmd=\"Delete\">" + "<Field Name='ID'>2</Field>" + "<Field Name='Name'>Mack</Field>" + "</Method>" + "</Batch>";

FeedbackHTTP = new ActiveXObject("MSXML2.XMLHTTP.3.0");

FeedbackHTTP.Open("POST", "http://sp2k10srvr:800/sites/test/_vti_bin/lists.asmx", false);

FeedbackHTTP.setRequestHeader("Content-Type", "text/xml; charset=utf-8");

FeedbackHTTP.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/sharepoint/soap/UpdateListItems");

var strSOAP = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" + "<soap:Envelopexmlns:xsi=\"http://www.w3.org/2001/XMLSchemainstance\"xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">" + "<soap:Body>" + "<UpdateListItems xmlns=\"http://schemas.microsoft.com/sharepoint/soap/\">" + "<listName>31stmay</listName>" + "<updates>" + UpdateNewItemXml + "</updates>" + "</UpdateListItems>" + "</soap:Body>" + "</soap:Envelope>";

FeedbackHTTP.Send(strSOAP);

alert("Thank you! your suggestion has been Deleted successfully.");

}

</script>