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HasChanges

methods

Checks if the data items have changed.

Requires an [ID field] to be configured in schema.model.id. Otherwise, will always return true.

hasChanges

Boolean

Returns:Boolean

—Returns true if the data items have changed. Otherwise, returns false.

<script>
var dataSource = new kendo.data.DataSource({
  data: [
    { id: 1, name: "Jane Doe" }
  ],
  schema: {
    model: { id: "id" }
  }
});
dataSource.fetch(function() {
/* The result can be observed in the DevTools(F12) console of the browser. */
  console.log(dataSource.hasChanges()); // displays "false"
  dataSource.add({ name: "John Doe" });
/* The result can be observed in the DevTools(F12) console of the browser. */
  console.log(dataSource.hasChanges()); // displays "true"
});
</script>