sharepoint Working with JavaScript Client Object Model (JSOM) Get a List Item by ID
Example
SP.SOD.executeOrDelayUntilScriptLoaded(myFunction,"sp.js");
function myFunction(){
var clientContext = new SP.ClientContext();
var list = clientContext.get_web().get_lists().getByTitle("List Title");
var item = list.getItemById(1); // get item with ID == 1
clientContext.load(item);
clientContext.executeQueryAsync(
function(){ // onSuccess
var title = item.get_item("Title");
alert(title);
},
function(sender,args){ // onError
alert(args.get_message());
}
);
}
