Volddemar4ik
/
homework


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

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        #traffic-light {
            border: 2px solid black;
            padding: 20px;
            border-radius: 50px;
            width: min-content;
        }

        #color-red,
        #color-green {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            border: 10px solid black;
            margin-bottom: 10px;
            background-color: transparent;
        }

        #btn {
            padding: 5px 25px;
            font-size: 1.2em;
            min-width: 164px;
            margin-top: 20px;
        }
    </style>
</head>

<body>
    <div id="traffic-light">
        <div id="color-red">
        </div>

        <div id="color-green">
        </div>


    </div>

    <button id="btn" type="button">Зеленый</button>
</body>

<script>

    const delay = ms => new Promise(ok => setTimeout(() => ok(ms), ms))

    function domEventPromise(element, nameOfEvent) {
        function executor(resolve) {
            function event(param) {
                element.disabled = true
                element.removeEventListener(nameOfEvent, event)
            }
            element.disabled = false
            element.addEventListener(nameOfEvent, event)
        }
        return new Promise(executor)
    }

    async function pedestrianTrafficLight(ms) {
        while (true) {

            const red = document.getElementById('color-red')
            red.style.backgroundColor = 'red'

            await Promise.race([
                delay(ms),
                domEventPromise(document.getElementById('btn'), 'click')
            ])

            red.style.backgroundColor = 'transparent'

            const green = document.getElementById('color-green')
            green.style.backgroundColor = 'green'

            await delay(ms)

            green.style.backgroundColor = 'transparent'
        }
    }
    pedestrianTrafficLight(6000)

</script>

</html>