use-in-viewport

React hook for check if the current element in viewport.

Author

• name: Martik Avagyan
• email: [email protected]
• github: m-avagyan

Getting started

Installation

npm install use-in-viewport or yarn add use-in-viewport

Example

import React, { useRef } from 'react';
import useInViewport from 'use-in-viewport';

function Example() {
  const elementRef = useRef(null);
  const inViewport = useInViewport(elementRef);

  return (
    <div ref={elementRef}>
      Element is {inViewport ? 'in viewport' : 'not in viewport'}
    </div>
  );
}

export default Example;

Options

• root: element scroll area (by default document.body)
• rootMargin: element margin from root (by default 0px)
• threshold: element visibility threshold (by default 0)

import React, { useRef } from 'react';
import useInViewport from 'use-in-viewport';

function Example() {
  const containerRef = useRef(null);
  const elementRef = useRef(null);
  const inViewport = useInViewport(elementRef, {
    root: containerRef,
    rootMargin: '20px',
    threshold: 1,
  });

  return (
    <div ref={containerRef}>
      <div ref={elementRef}>
        Element is {inViewport ? 'in viewport' : 'not in viewport'}
      </div>
    </div>
  );
}

export default Example;

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Copyright (c) 2022 Martik Avagyan