sync

Saves any data item changes.

The sync method will request the remote service if:

• The transport.create option is set and the data source contains new data items.
• The transport.destroy option is set and data items have been removed from the data source.
• The transport.update option is set and the data source contains updated data items.

Returns

Promise—A promise that will be resolved when all sync requests have finished successfully, or rejected if any single request fails.

Example - save the changes

<script>
var dataSource = new kendo.data.DataSource({
  batch: true,
  transport: {
    read:  {
      url: "https://demos.telerik.com/kendo-ui/service/products",
      dataType: "jsonp" //"jsonp" is required for cross-domain requests; use "json" for same-domain requests
    },
    update: {
      url: "https://demos.telerik.com/kendo-ui/service/products/update",
      dataType: "jsonp" //"jsonp" is required for cross-domain requests; use "json" for same-domain requests
    },
    destroy: {
      url: "https://demos.telerik.com/kendo-ui/service/products/destroy",
      dataType: "jsonp" //"jsonp" is required for cross-domain requests; use "json" for same-domain requests
    }
  },
  schema: {
    model: { id: "ProductID" }
  }
});
dataSource.fetch(function() {
  var product = dataSource.at(0);
  product.set("UnitPrice", 20);
  var anotherProduct = dataSource.at(1);
  anotherProduct.set("UnitPrice", 20);
  var yetAnotherProduct = dataSource.at(2);
  dataSource.remove(yetAnotherProduct);
  dataSource.sync(); // makes a request to https://demos.telerik.com/kendo-ui/service/products/update" and https://demos.telerik.com/kendo-ui/service/products/destroy
});
</script>