利用localStorage判断程序首次运行

<script type="text/javascript">
if (localStorage.pagecount)
  {
  localStorage.pagecount=Number(localStorage.pagecount) +1;
  }
else
  {
  localStorage.pagecount=1;
  }
if (localStorage.pagecount == 1)
  {
window.location.href="home.html";  //引导页页面
  }
else
  {
window.location.href="home.html";  //首页  }
</script>
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原文地址：https://www.cnblogs.com/xiongwei89/p/3128364.html