Anil Singh | Code-sample.com

The componentDidMount Method - The componentDidMount method is called after the component is rendered. The componentDidMount method is called exactly once and when The component has been initialized. Explore to Understand   -  React Lifecycle Components The componentDidMount method is used for - 1.        Handling the AJAX requests - GET/POST/PUT/DELETE 2.        Set timers using setTimeout or setInterval 3.        Set timers using setInterval As an Example , public   class   Header   extends   React . Component  {    constructor ( props ) {      super ( props );      this . state  = { msg:   "welcome!" };   }    componentDidMount () {      setTimeout (()  =>  {      ...