componentDidMount useEffect [hook function react native]

reactn-hook-componentdidmount.js

//Component type:

import React, { Component } from 'react'
export default class SampleComponent extends Component {
  componentDidMount() {
    // code to run on component mount
  }
render() {
    return (<div>foo</div>)
  }
}

//Hook Function: 
            
import React, { useEffect } from 'react'
const SampleComponent = () => {
  useEffect(() => {
    // code to run on component mount
  }, [])
return (<div>foo</div>)
}
export SampleComponent