? < PHP
// pop-up dialog box and return to the original page
echo "<Script Language = \" JavaScript \ "> \ r \ the n-" ;
echo "Alert (\" Hello \ "); \ r \ the n-" ;
/ / historical returns;
echo "history.back (); \ r \ the n-" ;
echo "</ Script>" ;
Exit ;
?>
<-! Php pop, is the use of JavaScript ->
<? PHP
echo "<Script Language = \" JavaScript \ "> Alert (\" Hello \ "); </ Script>" ;
?>
<!-- php弹窗，是利用javascript -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<script>
function del(){
if(confirm("确定要删除吗？")){
alert('删除成功！');
return true;
}else{
return false;
}
}
</script>
</body>
</html>
<?php
$button=<<<STR
<button onclick="del()">删除</button>
STR;
echo $button;
?>