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This is the archived documentation for Angular v17. Please visit angular.dev to see this page for the current version of Angular.

Signal

A reactive value which notifies consumers of any changes.

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      type Signal<T> = (() => T) & {
    [SIGNAL]: unknown;
};
    

Description

Signals are functions which returns their current value. To access the current value of a signal, call it.

Ordinary values can be turned into Signals with the signal function.