<![CDATA[
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>윈도우 닫기</title>
<link rel="stylesheet" href="style_js.css">
<style>
a { text-decoration-line: none; }
</style>
</head>
<body>
<a href="#" onclick="openWin()">누르면 새 창이 열립니다.</a><hr>
<a href="#" onclick="closeWin()">열린 창 닫기</a>
<script>
let nw;
function openWin() {
nw = open("", "_blank", "width=700, height=400, left=10, top=10");
nw.document.write("<h2>여기는 새 창</h2>");
}
function closeWin() {
if (nw) // 창이 존재하면 nw == true
nw.close();
}
</script>
</body>
</html>
]]>