React Js Array fill Method

        function App() {

            const originalArray = Array(6).fill().map((_, index) => index + 1);

            // Filling an array with a computed value

            const filledComputedArray = originalArray.map((value, index) => value * index);

​

            return (

                <div className="container">

                    <h1>React Js Array fill() Method</h1>

                    <h2>Original Array: {originalArray.join(', ')}</h2>

                    <h3>Filled Computed Array: {filledComputedArray.join(', ')}</h3>

                </div>

            );

        }

​

        ReactDOM.render(<App />, document.getElementById("app"));

    </script>

        function App() {

            const size = 5;

            const value = 'Hello';

            const filledArray = new Array(size).fill(value);

​

            return (

                <div className="container">

                    <h1>React Js Filling an array with a specific value</h1>

                    <h2>Array: {filledArray.join(', ')}</h2>

                </div>

            );

        }

​

        ReactDOM.render(<App />, document.getElementById("app"));

    </script>

        function App() {

            const array = [1, 2, 3, 4, 5];

            const startIndex = 2;

            const endIndex = 4;

            const value = 'Filled';

            array.fill(value, startIndex, endIndex);

​

            return (

                <div className="container">

                    <h1>React Js Filling a portion of an existing array</h1>

                    <h2>Array: {array.join(', ')}</h2>

​

                </div>

            );

        }

​

        ReactDOM.render(<App />, document.getElementById("app"));

    </script>