Angular Animation: animateChild function

Primary entry point exports

Functions - animateChild


The animateChild function in Angular animations is a powerful tool used to execute a queried inner animation element within an animation sequence. Let's delve into the details:

Function:


Parameters:

    - options (optional): An object of type AnimateChildOptions that can contain a delay value for the start of the animation and additional override values for developer-defined parameters. The default value is null.

Returns:

    - An object of type AnimationAnimateChildMetadata that encapsulates the child animation data.

    Usage Notes:

        1. Parent-Child Relationship:

            - Each time an animation is triggered in Angular, the parent animation takes priority, and any child animations are blocked by default.
            
            - To enable a child animation to run, the parent animation must query each element containing child animations and execute them using the animateChild function.

        2. Querying Elements:

            - The animateChild function is designed to be used with the query() function in Angular animations.

            - The parent animation needs to use query() to select elements with child animations and then execute those child animations using animateChild.

        3. Compatibility:

            - This feature is specifically designed for use with the Angular animation library.

            - It works only with animations defined using Angular's animation system and won't handle CSS keyframes and transitions.

Example Usage:


In this example, animateChild is used within a parent animation triggered by the parentAnimation trigger. The query function is employed to select elements with the class .child-element, and animateChild is used to execute the child animations associated with these elements, with an optional delay of 500 milliseconds.

Summary:

The animateChild function allows developers to control and execute child animations within a parent animation sequence. It plays a crucial role in managing the relationships between parent and child animations, providing granular control over the timing and execution of each animation in an Angular application.

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