Metadata for uploaded documents

Forms
4

Dear @Tony_Duke,
You just need to change FileLeafRef property, for example, like this:

...
var newName = "HelloWorld";    
var list = pnp.sp.web.lists.getByTitle("Documents2");
list.items.getById(uploadedItemId).update({
    ...
    FileLeafRef: newName
}).then(function(){
    console.log("Updated!");
    fd.control('SPDataTable1').refresh();
})

P.S. Be careful with folders, as it also contains path to file.