第6次作业-循环语句输出金字塔
发布时间 2023-04-05 15:22:59作者: 董舒
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script>
var num = prompt("请输入几层");
for(var i = 1; i<=num; i++){
for(var j=1; j<= num - i; j++)
{
document.write(" ");
}
for (var k=1; k<=2*i-1; k++)
{
document.write("*");
}
document.write("</br>");
}
</script>
</body>
</html>