Good programmer front-end share using JS to develop simple music player, recently, we teach students to use JavaScript, today with you to develop a simple music player. First, the final effect looks like this:
First, let’s write the HTML interface index.html, the code is as follows:
<! DOCTYPE html>
<html>
<head>
<meta charset=”utf-8″ />
<title></title>
<link rel=”stylesheet” type=”text/css” href=”css/style.css”/>
< script SRC = “js/jquery – 2.1.0. Js” type = “text/javascript” charset = “utf-8” > < / script >
<script src=”js/common.js” type=”text/javascript” charset=”utf-8″></script>
</head>
<body>
<! — player –>
<audio id=”song” autoplay=”autoplay”></audio>
<! — Overall structure –>
<div id=”boxDiv”>
<! — Lyrics display area –>
<div id=”contentDiv”>
<! — Lyrics display –>
<div id=”lrcDiv”></div>
<! — Upper shadow –>
<span id=”bgTopSpan”></span>
<! — Lower shadow –>
<span id=”bgBottomSpan”></span>
</div>
<! — Control area –>
<div id=”controlDiv”>
<! — Progress bar –>
<div id=”progressDiv”></div>
<! — Progress bar dot –>
<img id=”pointerImg” src=”img/audio/[email protected]”/>
<! — Play time –>
<span id=”playTimeSpan”>00:00</span>
<! — Song Title –>
<span id=”titleSpan”></span>
<! — Total time –>
<span id=”totalTimeSpan”>00:00</span>
<! — Button area –>
<div id=”buttonDiv”>
<! — Previous button –>
<img id=”prevImg” src=”img/audio/[email protected]”/>
<! Play pause button –>
<img id=”playOrPauseImg” src=”img/audio/[email protected]”/>
<! — Next button –>
<img id=”nextImg” src=”img/audio/[email protected]”/>
</div>
</div>
</div>
</body>
</html>
Next, write style.css as follows:
body{
margin: 0px;
background-color: #ccc;
}
#boxDiv{
width: 375px;
height: 568px;
margin: 10px auto;
position: relative;
}
#contentDiv{
width: 375px;
height: 460px;
background-image: url(.. /img/audio/[email protected]);
overflow: hidden;
}
#lrcDiv{
margin-top: 260px;
}
#lrcDiv span{
display: block;
line-height: 40px;
text-align: center;
color: white;
font-size: 20px;
}
#bgTopSpan{
position: absolute;
display: block;
width: 375px;
height: 30px;
top: 0px;
background-image: url(.. /img/audio/[email protected]);
}
#bgBottomSpan{
top: 430px;
position: absolute;
background-image: url(.. /img/audio/[email protected]);
display: block;
width: 375px;
height: 30px;
}
#controlDiv{
width: 375px;
height: 180px;
position: relative;
background-color: white;
}
#progressDiv{
background-color: red;
Height: 1.5 px;
width: 0px;
}
#pointerImg{
width: 18px;
height: 18px;
position: absolute;
Top: 8.5 px;
left: -3px;
}
#playTimeSpan{
display: block;
position: absolute;
font-size: 14px;
width: 35px;
top: 5px;
left: 5px;
}
#totalTimeSpan{
display: block;
position: absolute;
font-size: 14px;
width: 35px;
top: 5px;
left: 335px;
}
#titleSpan{
display: block;
position: absolute;
height: 30px;
width: 295px;
font-size: 20px;
text-align: center;
left: 40px;
top: 5px;
}
#buttonDiv{
margin-top: 40px;
position: relative;
}
#prevImg{
width: 40px;
height: 40px;
position: absolute;
top: 20px;
left: 60px;
}
#playOrPauseImg{
width: 70px;
height: 70px;
position: absolute;
top: 5px;
left: 152px;
}
#nextImg{
width: 40px;
height: 40px;
position: absolute;
top: 20px;
left: 275px;
}
Finally, write common.js with the following code:
$(function(){
// List of songs
Var playList = [” red sun “, “Wolf “,” cross the sea to see you “];
// The sequence number of the current song
var currentIndex = 0;
// The native object of the player
var audio = $(“#song”)[0];
// Play time array
var timeArr = [];
// Array of lyrics
var lrcArr = [];
// Invoke pre-play Settings
setup();
// Play the song
playMusic();
// Play the song
function playMusic(){
// Play the song
audio.play();
// Set the image to pause
$(“#playOrPauseImg”).attr(“src”, “img/audio/[email protected]”);
}
// Set before the song plays
function setup(){
// Set which song to play
// img/audio/ redsun.mp3
audio.src = “img/audio/” + playList[currentIndex] + “.mp3”;
// Set the name of the song
$(“#titleSpan”).text(playList[currentIndex]);
// Set the lyrics
setLrc();
}
// Set the lyrics
function setLrc(){
// Delete the lyrics of the previous song
$(“#lrcDiv span”).remove();
// Empty the array
timeArr = [];
lrcArr = [];
// Load the lyrics file
$.get(“img/audio/” + playList[currentIndex] + “.lrc”, {}, function(data){
if(data){
// Cut the string by line
var arr = data.split(“\n”);
// Split lyrics
for (var i = 0; i < arr.length; i++) {
// Split time and lyrics
var tempArr = arr[i].split(“]”);
if (tempArr.length > 1){
// Add the time and lyrics to the array
timeArr.push(tempArr[0]);
lrcArr.push(tempArr[1]);
}
}
// Display the lyrics
for (var i = 0; i < lrcArr.length; i++) {
$(“#lrcDiv”).append(“<span>”+lrcArr[i]+”</span>”);
}
}
});
}
// Play the pause event
$(“#playOrPauseImg”).click(function(){
// If the player is paused
if(audio.paused){
// Continue playing
playMusic();
}else{
/ / pause
audio.pause();
// Change the image to play
$(“#playOrPauseImg”).attr(“src”, “img/audio/[email protected]”);
}
});
/ / a
$(“#prevImg”).click(function(){
// If it is the first song, then skip to the last one
if(currentIndex == 0){
currentIndex = playList.length – 1;
}else{
currentIndex–;
}
// Set before playback
setup();
/ / play
playMusic();
});
/ / a
$(“#nextImg”).click(function(){
// If it is the last song, skip to the first one
if(currentIndex == playList.length – 1){
currentIndex = 0;
}else{
currentIndex++;
}
// Set before playback
setup();
/ / play
playMusic();
});
// Listen for player playback time changes
audio.addEventListener(“timeupdate”, function(){
// Current playback time
var currentTime = audio.currentTime;
/ / total time
var totalTime = audio.duration;
// When it is a number
if(! isNaN(totalTime)){
// Get the ratio of playback time to total elapsed time
var rate = currentTime / totalTime;
// Set the time display
// Play time
$(“#playTimeSpan”).text(getFormatterDate(currentTime));
/ / total duration
$(“#totalTimeSpan”).text(getFormatterDate(totalTime));
// Set the progress bar
$(“#progressDiv”).css(“width”, rate * 375 + “px”);
// Set the progress dot
$(“#pointerImg”).css(“left”, (375 – 15) * rate – 3 + “px”);
// Set the lyrics color and content scroll
for (var i = 0; i < timeArr.length – 1; i++) {
if(! isNaN(getTime(timeArr[i]))){
// The current playback time is greater than or equal to line I and less than the next line
if (currentTime >= getTime(timeArr[i]) && currentTime < getTime(timeArr[i+1])){
// The current line of lyrics changes to red
$(“#lrcDiv span:eq(“+i+”)”).css(“color”, “#FF0000”);
// Other lines of lyrics go white
$(“#lrcDiv span:not(:eq(“+i+”))”).css(“color”, “#FFFFFF”);
// Current line lyrics scroll
$(“#lrcDiv”).stop(false, true).animate({“margin-top”: 260 – 40 * i + “px”}, 1000);
}
}
}
}
});
function getTime(timeStr){
// remove the left [
var arr = timeStr.split(“[“);
if(arr.length > 1){
// Get the time on the right
var str = arr[1];
// Split minutes and seconds
var tempArr = str.split(“:”);
/ / points
var m = parseInt(tempArr[0]);
/ / SEC.
var s = parseFloat(tempArr[1]);
return m * 60 + s;
}
return 0;
}
// Format time (00:00)
function getFormatterDate(time){
/ / points
var m = parseInt(time / 60);
/ / SEC.
var s = parseInt(time % 60);
/ / zero padding
m = m > 9 ? m : “0” + m;
s = s > 9 ? s : “0” + s;
return m + “:” + s;
}
});
Pictures and songs, lyrics please download, finally, you can run a try.