workers-ui-basic/index.html at master · EdisonRojas93/workers-ui-basic · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        input,
        select,
        button {
            display: block;
            margin: 15px 0;
        }


        .lds-ring {
            display: inline-block;
            position: relative;
            width: 80px;
            height: 80px;
        }

        .lds-ring div {
            box-sizing: border-box;
            display: block;
            position: absolute;
            width: 64px;
            height: 64px;
            margin: 8px;
            border: 8px solid #000;
            border-radius: 50%;
            animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
            border-color: #000 transparent transparent transparent;
        }

        .lds-ring div:nth-child(1) {
            animation-delay: -0.45s;
        }

        .lds-ring div:nth-child(2) {
            animation-delay: -0.3s;
        }

        .lds-ring div:nth-child(3) {
            animation-delay: -0.15s;
        }

        @keyframes lds-ring {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }

        .hide {
            display: none;
        }
    </style>

</head>

<body>
    <label for="">se va a crear una estructura fionachi</label>
    <input id="number" type="number" value="">
    <!-- <select id="operator">
        <option value="+">Sumar</option>
        <option value="-">Restar</option>
        <option value="/">Dividir</option>
        <option value="*">Multiplicar</option>
    </select> -->

    <button type="button" onclick="operationWithWorker()">validar con worker</button>
    <button type="button" onclick="operationWithoutWorker()">validar sin worker</button>

    <div id="result"></div>
    <div id="spinner" class="lds-ring hide">
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </div>

    <script>
        const worker = new Worker('./worker.js');
        const spinner = document.querySelector('#spinner');
        const showResult = document.querySelector('#result');

        const operationWithWorker = () => {
            showResult.innerHTML = '';
            toogleSpinner();

            let input = document.querySelector('#number');
            // let operator = document.querySelector('#operator').value;
            let value = parseInt(input.value);

            worker.postMessage({
                number: value
            });
        }

        const operationWithoutWorker = async () => {
            showResult.innerHTML = '';
            toogleSpinner();
            let input = document.querySelector('#number');
            let value = parseInt(input.value);

            const result = await fibonacci(value);
            showResult.innerHTML = result;
            console.log(result);

            toogleSpinner();
        }

        const fibonacci = (number) => {

            return new Promise((resolve, reject) => {
                let values = [0, 1];

                for (let i = 0; i < number; i++) {
                    const numbers = Object.assign([], values);
                    const value = numbers.reverse().slice(0, 2).reduce((a, b) => a + b);
                    values.push(value);
                }

                resolve(values);
            })

        }

        const toogleSpinner = () => {
            if (spinner.classList.contains('hide')) {
                spinner.classList.remove('hide');
            } else {
                spinner.classList.add('hide');
            }
        }

        worker.onmessage = (e) => {
            showResult.innerHTML = e.data;
            console.log(`resultado es: ${e.data}`);
            toogleSpinner();
        }
    </script>
</body>

</html>