Lifecycle: ComponentDidMount()

Runs after the component output has been rendered to the DOM. 

ComponentDidMount() {
    this.timerID = setInterval(
      () => this.tick(),
      1000
    );
  }

Lifecycle: ComponentDidMount() — Structure map

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Lifecycle: ComponentDidMount() — Related pages:

Context

Portals

Accessibility

Refs and the DOM

React Without ES6

State and Lifecycle