实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
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<!DOCTYPE html>
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<html>
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<body>
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​
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<a id="w3s" hreflang="en-us" href="/">W3Cschool</a><br>
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​
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<script>
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document.write("Return hreflang of link: ");
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document.write(document.getElementById('w3s').hreflang);
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document.write("<br><br>");
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</script>
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​
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<a id="google" href="https://www.google.com/">Google</a><br>
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​
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<script>
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document.getElementById('google').hreflang="no";
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document.write("Set hreflang of link to: ");
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document.write(document.getElementById('google').hreflang);
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</script>
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​
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</body>
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</html>
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