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const area = document.createElement("area");
area.href = "https://developer.mozilla.org/ja/HTMLAreaElement";
area.host === "developer.mozilla.org";
area.href = "https://developer.mozilla.org:443/ja/HTMLAreaElement";
area.host === "developer.mozilla.org";
// ãã¼ãçªå·ã¯ã 443 ãã¹ãã¼ã ã®æ¢å®ã®ãã¼ãã§ããããå«ã¾ããªã
area.href = "https://developer.mozilla.org:4097/ja/HTMLAreaElement";
area.host === "developer.mozilla.org:4097";
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