React Js Get Last Item from Array

React Js Get Last Item from Array:To get the last item from an array in React.js, you can use multiple approaches. One way is to utilize the length property of the array. By subtracting 1 from the length, you can access the last item using array[length - 1].

Another method is to use the slice() method with a negative index, like array.slice(-1)[0], which extracts the last element. Alternatively, you can use the pop() method, which removes and returns the last element from the array, by simply calling array.pop(). All of these techniques achieve the goal of retrieving the last item from an array in React.js.

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How can you retrieve the last item of an array in React.js by utilizing the length property?

In this React.js code snippet, an array called array is defined with four elements. To retrieve the last item of the array, the length property of the array is used. By subtracting 1 from the length, the index of the last item is obtained. The last item is then stored in the lastItem variable. Finally, the array and the last item are displayed in the rendered HTML using JSX syntax.

React js get last item of array using length property

    <script type="text/babel">
        function App() {
            const array = ['Vue Js ', 'React Js', 'Aangular Js', 'Javascript'];
            const lastItem = array[array.length - 1];
            return (
                <div className='container'>
                    <h3>React js get last item of array using length property</h3>
                    <p>Array: {array.join(',')}</p>
                    <p>Last Item: {lastItem}</p>
                </div>
            );
        }

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

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Output of React Js Get Last Item from Array

How can the `slice()` method be used in React.js to retrieve the last item of an array?

In the provided code snippet, React.js is used to get the last item of an array. The slice() method is used with a negative index (-1) to extract the last element from the array. The value of lastItem is assigned the result of the slice() operation. The extracted last item is then displayed within the JSX code using the {lastItem} expression.

React js get last item of array using slice() method

 <script type="text/babel">
        function App() {
            const array = ['Vue Js ', 'React Js', 'Aangular Js', 'Javascript'];
            const lastItem = array.slice(-1);
            return (
                <div className='container'>
                    <h3>React js get last item of array using slice() method</h3>
                    <p>Array: {array.join(',')}</p>
                    <p>Last Item: {lastItem}</p>
                </div>
            );
        }

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

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How can you use the `pop()` method in React.js to retrieve the last item of an array?

In the given code snippet, a React.js component named App is defined. Inside this component, there is an array called array containing four elements. The pop() method is used on the array to remove and retrieve the last item, which is assigned to the variable lastItem. The rendered output displays the original array and the last item using JSX syntax.

React js get last item of array using pop() method

    <script type="text/babel">
        function App() {
            const array = ['Google ', 'Google Map', 'Google Analytic', 'Google Pay'];
            const lastItem = array.pop();
            return (
                <div className='container'>
                    <h3>React js get last item of array using pop() method</h3>
                    <p>Array: {array.join(',')}</p>
                    <p>Last Item: {lastItem}</p>
                </div>
            );
        }

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

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How can you retrieve the last object from an array of objects in React.js?

In this React.js code, an array of objects called myArray is defined. To get the last object from this array, the variable lastObject is assigned the value of myArray[myArray.length - 1]. The lastObject will hold the last element of the array. The code then renders a React component that displays the array elements and the name of the last object in the array.

React js get last object from array of object Example

    <script type="text/babel">
        function App() {
            const myArray = [
                { id: 1, name: "John" },
                { id: 2, name: "Jane" },
                { id: 3, name: "Bob" }
            ];

            const lastObject = myArray[myArray.length - 1];

            return (
                <div className='container'>
                    <h3>React js get last object from array of object</h3>
                    <p>Array: {myArray.map(item => item.name).join(', ')}</p>
                    <p>Last Item: {lastObject.name}</p>
                </div>
            );
        }

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

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