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//定义变量

var playcurrentTime = 0;

var start = "00:00";

var end = "00:00";

var t1;

var pp = 1;

var audio = document.getElementById("player");

var starts = document.getElementById('start');

starts.innerHTML = start;

var ends = document.getElementById('end');

ends.innerHTML = end;

//这里是一些移动端拖动的处理

$(document).ready(function() {

const progressWrapper = document.querySelector('.progress-wrapper')

const progress = document.querySelector('.progress')

const progressBtn = document.querySelector('.progress-btn')

const progressWrapperWidth = progressWrapper.offsetWidth

let touchPoint = 0;

let btnLeft = 0

progressBtn.addEventListener('touchstart', e => {

let touch = e.touches[0]

touchPoint = touch.clientX // 获取触摸的初始位置

btnLeft = parseInt(getComputedStyle(progressBtn, null)['left'], 10) // 此处忽略IE浏览器兼容性

})

progressBtn.addEventListener('touchmove', e => {

e.preventDefault()

window.clearInterval(t1);

pp=2;

plays();

let touch = e.touches[0]

let diffX = touch.clientX - touchPoint // 通过当前位置与初始位置之差计算改变的距离

let btnLeftStyle = btnLeft + diffX // 为按钮定义新的left值

if(btnLeftStyle > progressWrapperWidth) {

btnLeftStyle = progressWrapperWidth

} else if(btnLeftStyle < 0) {

btnLeftStyle = 0

}

var cd = btnLeftStyle;

if(cd < 10) {

cd = 10;

}

touch.target.style.left = cd + 'px'

playcurrentTime = cd;

progress.style.width = (btnLeftStyle / progressWrapperWidth) * 100 + '%' // 通过按钮的left值与进度条容器长度的比值，计算进度条的长度百分比

console.log((btnLeftStyle / progressWrapperWidth) * 100)

})

progressBtn.addEventListener('touchend', e => {

e.preventDefault()

var div = document.getElementById('progress-wrapper');

var width = div.style.width || div.clientWidth || div.offsetWidth || div.scrollWidth; width

audio.currentTime = (playcurrentTime/width) * audio.duration;

pp=1;

plays();

})

});

//处理播放时间

function formatTime(second) {

return [ parseInt(second / 60 % 60), parseInt(second % 60) ].join(

":").replace(/b(d)b/g, "0$1");

}

//播放

function plays() {

if (pp == 1) {

if (audio.paused) {

audio.play();

}

t1 = window.setInterval(function() {

const progress = document.querySelector('.progress');

progress.style.width =(audio.currentTime / audio.duration)* 100 + '%';

starts.innerHTML = formatTime(parseInt(audio.currentTime));

ends.innerHTML = formatTime(parseInt(audio.duration));

var div = document.getElementById('progress-wrapper');

var width = div.style.width || div.clientWidth || div.offsetWidth || div.scrollWidth; width

const progressBtn = document.querySelector('.progress-btn')

progressBtn.style.left =(audio.currentTime / audio.duration)*width + 'px';

}, 200);

pp = 2;

} else {

audio.pause();

window.clearInterval(t1);

pp = 1;

}