<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script src="./22.js"></script>
</body>
</html>
for (var x = 1; x <= 9; x++) {//行数循环,到九截至
for(var y=0; y<=x;y++){
document.write(' ')//每次循环前加一个空格
}
for (var y = 1; y <= x; y++) {
document.write(y + "*" + x + '=' + x * y + ' ')//每个式子后加两个空格
if (x == y) {
document.write("<br/>")//换行
}
}
}