class Bindingmethod

Binding​.none()

Creates a new binding that returns true if none of the combined bindings are truthy.

static none(
  ...sources: Array<undefined | null | string | Binding>
): Binding<boolean>;

Summary

Returns true only when all bindings are bound and none of the values are truthy. Returns true if no valid sources remain after filtering.

Parameters

• sources — One or more instances of Binding or source paths; undefined/null values are filtered out

Return value

A new Binding object

Related

• class Binding
  A class that represents a property binding.