test.php
<?php
$sum = 0;
for ($i=1;$i<=100;$i++)
{
$sum += $i;
}
echo "1+2+......+100=".$sum;
?>t320.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="../../js/jquery-3.5.1.js"></script>
<script>
//load方法
//获取扩展名为php的文件计算结果
$(function () {
$("div").load("test.php");
});
</script>
</head>
<body>
<div></div>
</body>
</html>