实例代码

<p>本页面每5秒刷新一下,这是您第<mark></mark>次进入本页面!</p>
<script>
if (window.localStorage) {
var metaRefresh = localStorage.metaRefresh || 0;
document.querySelector("mark").innerHTML = ++metaRefresh;
localStorage.metaRefresh = metaRefresh;
}
</script>

  

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05-07 15:45