返回链接的 charset 属性

<a id="w3s" charset="ISO-8859-1" href="https://www.mifengjc.com/">Mifengjc</a><br>

<script>

  document.write("返回链接的charset: ");

  document.write(document.getElementById('w3s').charset);

  document.write("<br><br>");

</script>

<a id="google" href="http://www.google.com/">Google</a><br>

<script>

  document.getElementById('google').charset = "utf-8";

  document.write("设置链接的charset: ");

  document.write(document.getElementById('google').charset);

</script>