html结构如下:
1 <div class="app-voice-you" voiceSrc="xx.mp3">
2 <img class="app-voice-headimg" src="xx.png" />
3 <div style="width: 60%;" class="app-voice-state-bg">
4 <div class="app-voice-state app-voice-pause"></div>
5 </div>
6 <div class="app-voice-time app-voice-unread">
7 1'6"
8 </div>
9 </div>
10
11 <!--语音播放控件-->
12 <audio id="audio_my" src="">
13 Your browser does not support the audio tag.
14 </audio>
核心功能就是语音播放,主要包括了以下几个功能点:
红点表明未听语音,语音听过后,红点会消失;
将“未读”状态的样式独立出来,“已读”的时候,把样式删除就行。结合本地存储处理就搞定了。
1 //this是点击的语音的document
2 var app_voice_time = this.getElementsByClassName("app-voice-time")[0];
3 if(app_voice_time.className.indexOf("app-voice-unread") != -1){
4 //存在红点时,把红点样式删除
5 app_voice_time.className = app_voice_time.className.replace("app-voice-unread","");
6 }
第一次听语音,会自动播放下一段语音;
这里主要是使用HTML5的audio控件的“语音播放完”事件
语音播放完,找到下一个语音,播放下一个语音
1 //语音播放完事件(PAGE.audio是audio控件的document)
2 PAGE.audio.addEventListener('ended', function () {
3 //循环获取下一个节点
4 PAGE.preVoice = PAGE.currentVoice;
5 var currentVoice = PAGE.currentVoice;
6 while(true){
7 currentVoice = currentVoice.nextElementSibling;//下一个兄弟节点
8 //已经到达最底部
9 if(!currentVoice){
10 PAGE.preVoice.getElementsByClassName("app-voice-state")[0].className = "app-voice-state app-voice-pause";
11 return false;
12 }
13 var voiceSrc = currentVoice.getAttribute("voiceSrc");
14 if(voiceSrc && voiceSrc != ""){
15 break;
16 }
17 }
18 if(!PAGE.autoNextVoice){
19 PAGE.preVoice.getElementsByClassName("app-voice-state")[0].className = "app-voice-state app-voice-pause";
20 return false;
21 }
22 PAGE.currentVoice = currentVoice;
23 //获取得到下一个语音节点,播放
24 PAGE.audio.src = voiceSrc;
25 PAGE.audio.play();
26 PAGE.Event_PlayVoice();
27 }, false);
每段语音可以暂停、继续播放、重新播放;
这个比较简单,但是也是比较多逻辑。需要变换样式告诉用户,怎样是继续播放/重新播放。
播放中的语音有动画,不是播放中的语音则会停止动画。
这里主要是CSS3动画的应用
1 .app-voice-pause,.app-voice-play{
2 height: 18px;
3 background-repeat: no-repeat;
4 background-image: url(../img/voice.png);
5 background-size: 18px auto;
6 opacity: 0.5;
7 }
8 .app-voice-you .app-voice-pause{
9 /*从未播放*/
10 background-position: 0px -39px;
11 }
12 .app-voice-you .app-voice-play{
13 /*播放中(不需要过渡动画)*/
14 background-position: 0px -39px;
15 -webkit-animation: voiceplay 1s infinite step-start;
16 -moz-animation: voiceplay 1s infinite step-start;
17 -o-animation: voiceplay 1s infinite step-start;
18 animation: voiceplay 1s infinite step-start;
19 }
20 @-webkit-keyframes voiceplay {
21 0%,
22 100% {
23 background-position: 0px -39px;
24 }
25 33.333333% {
26 background-position: 0px -0px;
27 }
28 66.666666% {
29 background-position: 0px -19.7px;
30 }
31 }