js 设置标题 空白

<script>document.title = '\u200E';</script>      

<div class="header"><a onclick="window.history.back(-1); return false;" class="back mui-icon mui-icon-back"></a><h1>xxx</h1></div>
    <div class="head"></div>      

<a href="index.html"  class="back mui-icon mui-icon-back"></a>