只能用JS，怎么得出1000以内所有的勾股数？？
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script type="text/javascript">
let arr = []
for (var i = 0; i <= 1000; i++) {
for (var j = i+1; j <= 1000; j++) {
for (var k = j+1; k <= 1000; k++) {
if (Math.pow(i, 2) + Math.pow(j, 2) === Math.pow(k, 2)) {
arr.push([i, j, k])
}
}
}
}
console.log(arr)
</script>
</body>
</html>