Incrementing the URL's ID in JavaScript by clicking a button

Question

Hello Everyone,
I want to Incrementing the URL's ID in JavaScript by clicking a button on the Page in a Content Editor Web Part. I already added the button, but it doesn't incrememnt the ID for the URL. Help will be appreciated. Thatnks.
Mike
Michael L. Williams

Answer 1

You could use the JavaScript client object model to query the library for the next document set.
The CAML query would need to return items where the content type inherits from Document Set, and the ID is greater than the current item's ID, sorted in ascending order, with a row limit of 1 so that only the first matching
item is returned.
The code would look something like below (replace "Name of your library" with the actual title of your library).
<input type="button" onclick="GoToNextId()" value="Next" />
<script>
function GoToNextId(){
var currId = GetUrlKeyValue("ID");
var clientContext = new SP.ClientContext();
var list = clientContext.get_web().get_lists().getByTitle("Name of your library");
var camlQuery = new SP.CamlQuery();
camlQuery.set_viewXml("<View><Query><Where><And><BeginsWith><FieldRef Name='ContentTypeId'/><Value Type='ContentTypeId'>0x0120D520</Value></BeginsWith><Gt><FieldRef Name='ID' /><Value Type='Counter'>"+currId+"</Value></Gt></And></Where><OrderBy><FieldRef Name='ID' /></OrderBy></Query><RowLimit>1</RowLimit></View>");
var items = list.getItems(camlQuery);
clientContext.load(items);
clientContext.executeQueryAsync(Function.createDelegate(this,function(){
var itemEnumerator = items.getEnumerator();
var counter = 0;
while(itemEnumerator.moveNext()){
var item = itemEnumerator.get_current();
counter = item.get_item("ID");
if(counter != 0){
window.location.href = window.location.pathname + "?ID="+counter
} else{
alert("There are no more document sets after the current set.")
}),Function.createDelegate(this,function(sender,args){alert(args.get_message())}));
</script>
Note that 0x0120D520 is the content type ID for document sets. Any content type that inherits from Document Set will have a content type ID that begins with that value.
You could add similar JavaScript to go to the "previous" document set. You would just need to change the CAML query so that it looks for items with an ID less than the current item instead of greater than, and change the sort order to be descending.
<View><Query><Where><And><BeginsWith><FieldRef Name='ContentTypeId'/><Value Type='ContentTypeId'>0x0120D520</Value></BeginsWith><Lt><FieldRef Name='ID' /><Value Type='Counter'>"+currId+"</Value></Lt></And></Where><OrderBy><FieldRef Name='ID' Ascending='False'/></OrderBy></Query><RowLimit>1</RowLimit></View>
I hope that helps!