js仿iphone秒表功能 计算平均数

js实现类似iphone的秒表，添加平均数功能

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disabled="true" onclick="stopChange()"/> disabled="true" onclick="addNewValue()"/> disabled="true" onclick="resetStopWatch()"/>

<div style="width:200px;margin-top:10px;" >
  <div style="padding-top:20px;"&gt;当前<a href="https://www.jb51.cc/tag/cishu/" target="_blank" class="keywords">次数</a>计时</div>
  <div id="count-Time" >
    00:00:00.00
  </div>
  <div style="padding-top:20px;"&gt;总时间计时</div>
  <div id="total-Time" >
    00:00:00.00
  </div>
  <div style="padding-top:20px;"&gt;
    <div>平均值</div>
    <div id ="average" >00:00:00.00</div> 
  </div> 
</div>

<div style="width: 200px;position: absolute;left: 300px;top: 50px;" >
  <div style="padding-top:20px;"&gt;当前<a href="https://www.jb51.cc/tag/cishu/" target="_blank" class="keywords">次数</a>计时(秒)</div>
  <div id="count-second-Time"&gt;
    0
  </div>

  <div style="padding-top:20px;"&gt;总时间计时(秒)</div>
  <div id="total-second-Time"&gt;
    0
  </div>
  <div style="padding-top:20px;"&gt;
    <div>平均值(秒)</div>
    <div id ="average-second" >0</div> 
  </div>
</div>

<div style="width:200px;margin-top:21px;">
添加的次数列表

</div>

<div style="width: 200px;position: absolute;left: 300px;top:253px;">
添加的次数列表(秒)

</div>

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