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五角星矩形阵
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>五角星矩形阵</title>
</head>
<body>
<script>
for(var j = 1; j<= 3; j++){
for(var i = 1;i <= 5; i++){
document.write("☆");
}
document.write("<br/>");
}
</script>
</body>
</html>
五角星直角三角形阵
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>五角星直角三角形阵</title>
</head>
<body>
<script>
var k = prompt("请输入行数:")
for(var j = 1; j<= k; j++){
for(i = 1; i <= j; i++){
document.write("☆");
}
document.write("<br/>");
}
</script>
</body>
</html>