javascript - JS 广播播放器在浏览网站时不断重置

Question

我在网站上使用 JS 广播播放器。每当有人进入新页面或刷新当前页面时，音量 slider 都会重置为 25%。此外，每次有人进入新页面时，广播播放器都会自行重新启动，从而导致音乐中断。解决这些问题的最佳方法是什么，以便它记住用户的音量并且音乐在切换页面时不会中断？目前，我在加载时将初始音量设置为 25%，因为由于某种原因音量非常大。

--编辑--
我关于音量的问题已经得到解答，现在我只需要一个解决方案来防止播放器在切换页面时重新启动。

广播播放器 JS:

'use strict';
var audioPlayer = document.querySelector('.ggr-radio-player');
var playPause = audioPlayer.querySelector('#playPause');
var playpauseBtn = audioPlayer.querySelector('.play-pause-btn');
var loading = audioPlayer.querySelector('.loading');
var progress = audioPlayer.querySelector('.ggr-progress');
var sliders = audioPlayer.querySelectorAll('.ggr-slider');
var volumeBtn = audioPlayer.querySelector('.ggr-volume-btn');
var volumeControls = audioPlayer.querySelector('.ggr-volume-controls');
var volumeProgress = volumeControls.querySelector('.ggr-slider .ggr-progress');
var player = audioPlayer.querySelector('audio');
var currentTime = audioPlayer.querySelector('.current-time');
var totalTime = audioPlayer.querySelector('.total-time');
var speaker = audioPlayer.querySelector('#speaker');
var draggableClasses = ['pin'];
var currentlyDragged = null;
player.volume = 0.25;
window.addEventListener('mousedown', function (event) {
    if (!isDraggable(event.target)) return false;
    currentlyDragged = event.target;
    var handleMethod = currentlyDragged.dataset.method;
    this.addEventListener('mousemove', window[handleMethod], false);
    window.addEventListener('mouseup', function () {
        currentlyDragged = false;
        window.removeEventListener('mousemove', window[handleMethod], false);
    }, false);
});
playpauseBtn.addEventListener('click', togglePlay);
player.addEventListener('timeupdate', updateProgress);
player.addEventListener('volumechange', updateVolume);
player.addEventListener('loadedmetadata', function () {
    totalTime.textContent = formatTime(player.duration);
});
player.addEventListener('canplay', makePlay);
player.addEventListener('ended', function () {
    playPause.attributes.d.value = "M18 12L0 24V0";
    player.currentTime = 0;
});
volumeBtn.addEventListener('click', function () {
    volumeBtn.classList.toggle('open');
    volumeControls.classList.toggle('hidden');
});
window.addEventListener('resize', directionAware);
sliders.forEach(function (slider) {
    var pin = slider.querySelector('.pin');
    slider.addEventListener('click', window[pin.dataset.method]);
});
directionAware();

function isDraggable(el) {
    var canDrag = false;
    var classes = Array.from(el.classList);
    draggableClasses.forEach(function (draggable) {
        if (classes.indexOf(draggable) !== -1) canDrag = true;
    });
    return canDrag;
}

function inRange(event) {
    var rangeBox = getRangeBox(event);
    var rect = rangeBox.getBoundingClientRect();
    var direction = rangeBox.dataset.direction;
    if (direction == 'horizontal') {
        var min = rangeBox.offsetLeft;
        var max = min + rangeBox.offsetWidth;
        if (event.clientX < min || event.clientX > max) return false;
    }
    else {
        var min = rect.top;
        var max = min + rangeBox.offsetHeight;
        if (event.clientY < min || event.clientY > max) return false;
    }
    return true;
}

function updateProgress() {
    var current = player.currentTime;
    var percent = current / player.duration * 100;
    progress.style.width = percent + '%';
    currentTime.textContent = formatTime(current);
}

function updateVolume() {
    volumeProgress.style.height = player.volume * 100 + '%';
    if (player.volume >= 0.5) {
        speaker.attributes.d.value = 'M14.667 0v2.747c3.853 1.146 6.666 4.72 6.666 8.946 0 4.227-2.813 7.787-6.666 8.934v2.76C20 22.173 24 17.4 24 11.693 24 5.987 20 1.213 14.667 0zM18 11.693c0-2.36-1.333-4.386-3.333-5.373v10.707c2-.947 3.333-2.987 3.333-5.334zm-18-4v8h5.333L12 22.36V1.027L5.333 7.693H0z';
    }
    else if (player.volume < 0.5 && player.volume > 0.05) {
        speaker.attributes.d.value = 'M0 7.667v8h5.333L12 22.333V1L5.333 7.667M17.333 11.373C17.333 9.013 16 6.987 14 6v10.707c2-.947 3.333-2.987 3.333-5.334z';
    }
    else if (player.volume <= 0.05) {
        speaker.attributes.d.value = 'M0 7.667v8h5.333L12 22.333V1L5.333 7.667';
    }
}

function getRangeBox(event) {
    var rangeBox = event.target;
    var el = currentlyDragged;
    if (event.type == 'click' && isDraggable(event.target)) {
        rangeBox = event.target.parentElement.parentElement;
    }
    if (event.type == 'mousemove') {
        rangeBox = el.parentElement.parentElement;
    }
    return rangeBox;
}

function getCoefficient(event) {
    var slider = getRangeBox(event);
    var rect = slider.getBoundingClientRect();
    var K = 0;
    if (slider.dataset.direction == 'horizontal') {
        var offsetX = event.clientX - slider.offsetLeft;
        var width = slider.clientWidth;
        K = offsetX / width;
    }
    else if (slider.dataset.direction == 'vertical') {
        var height = slider.clientHeight;
        var offsetY = event.clientY - rect.top;
        K = 1 - offsetY / height;
    }
    return K;
}

function changeVolume(event) {
    if (inRange(event)) {
        player.volume = getCoefficient(event);
    }
}

function formatTime(time) {
    var min = Math.floor(time / 60);
    var sec = Math.floor(time % 60);
    return min + ':' + (sec < 10 ? '0' + sec : sec);
}

function togglePlay() {
    if (player.paused) {
        playPause.attributes.d.value = "M0 0h6v24H0zM12 0h6v24h-6z";
        player.play();
    }
    else {
        playPause.attributes.d.value = "M18 12L0 24V0";
        player.pause();
    }
}

function makePlay() {
    playpauseBtn.style.display = 'block';
    loading.style.display = 'none';
}

function directionAware() {
    if (window.innerHeight < 250) {
        volumeControls.style.bottom = '-54px';
        volumeControls.style.left = '54px';
    }
    else if (audioPlayer.offsetTop < 154) {
        volumeControls.style.bottom = '-164px';
        volumeControls.style.left = '-3px';
    }
    else {
        volumeControls.style.bottom = '52px';
        volumeControls.style.left = '-3px';
    }
}

广播播放器 HTML:

                <div class="ggr-radio">
                    <div class="ggr-now-playing">
                        <marquee behavior="scroll" direction="left" scrollamount="2">
                            <span id="cc_strinfo_trackartist_gamersguildradio" class="cc_streaminfo"></span> - <span id="cc_strinfo_tracktitle_gamersguildradio" class="cc_streaminfo"></span>
                        </marquee>
                    </div>
                    <div class="audio ggr-radio-player">
                        <div class="loading">
                            <div class="spinner"></div>
                        </div>
                        <div class="play-pause-btn">
                            <svg xmlns="http://www.w3.org/2000/svg" width="18" height="24" viewBox="0 0 18 24">
                                <path fill="#566574" fill-rule="evenodd" d="M0 0h6v24H0zM12 0h6v24h-6z" class="play-pause-icon" id="playPause" />
                            </svg>
                        </div>
                        <div class="controls">
                            <span class="current-time">0:00</span>
                        </div>
                        <div class="ggr-volume">
                            <div class="ggr-volume-btn">
                                <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24">
                                    <path fill="#566574" fill-rule="evenodd" d="M14.667 0v2.747c3.853 1.146 6.666 4.72 6.666 8.946 0 4.227-2.813 7.787-6.666 8.934v2.76C20 22.173 24 17.4 24 11.693 24 5.987 20 1.213 14.667 0zM18 11.693c0-2.36-1.333-4.386-3.333-5.373v10.707c2-.947 3.333-2.987 3.333-5.334zm-18-4v8h5.333L12 22.36V1.027L5.333 7.693H0z" id="speaker"/>
                                </svg>
                            </div>
                            <div class="ggr-volume-controls hidden">
                                <div class="ggr-slider" data-direction="vertical">
                                    <div class="ggr-progress">
                                        <div class="pin" id="ggr-volume-pin" data-method="changeVolume">
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                        <audio crossorigin autoplay id="radio">
                            <source src="http://192.95.18.39:5272/stream" type="audio/mp3">
                        </audio>
                    </div>
                </div>

Answer 1

当页面加载时，您每次都设置 slider 值:player.volume = 0.25;

当用户更改 slider 值或离开当前页面时，将该值存储在 cookie 中。刷新页面时，将 cookie 中存储的值加载到播放器。