WebApp模式下MUI的顶部mui-bar-tab

<nav class="mui-bar mui-bar-tab">  
      <a class="mui-tab-item mui-active">  
        <span class="mui-icon mui-icon-home"></span>  
      </a>  
      <a class="mui-tab-item">  
        <span class="mui-icon mui-icon-settings"></span>  
      </a>  
      <a class="mui-tab-item">  
        <span class="mui-icon mui-icon-search"></span>  
      </a>  
      <a class="mui-tab-item">  
        <span class="mui-icon mui-icon-gear"></span>  
      </a>  
      <a class="mui-tab-item">  
        <span class="mui-icon mui-icon-contact"></span>  
      </a>  
    </nav>

这种简单的bar-tab结构，在IE下模拟WindowsPhone，点击时，会有脚本错误。

在EDGE下模拟Windows Phone 10，无脚本错误，但无法设置mui-active样式。