放入 <?php ?> 时不会出现 Confirm("Message")

Question

onclick='return confirm('Delete this comment?')' 似乎根本不起作用：

<?php           
     if($sesType == 'Admin') {
        echo "<a href = 'editCom.php?id=$commentID'>Edit</a> ";
        echo "<a href='deleteCom.php?id=$commentID' onclick='return confirm('Delete this comment?')'>Delete</a>";
    } else if($_SESSION["username"] != NULL AND $_SESSION["username"] == $postname) {
        echo "<a href = 'editCom.php?id=$commentID'>Edit</a>  ";
        echo "<a href='deleteCom.php?id=$commentID' onclick='return confirm('Delete this comment?')'>Delete</a>";
    }
?>

但是没有出现确认框。

Answer 1

您在单引号内使用了单引号。使用双引号来包裹您的代码：

<a href='#' onclick="return confirm('Confirmation Message')">Link</a>

Answer 2

只需更改此代码，它就会起作用。

echo "<a href='deleteCom.php?id=$commentID' onclick="return confirm('Delete this comment?')">Delete</a>";

Answer 3

你误用了单引号和双引号。您必须在引号上加上斜杠 () 才能转义。 html 应如下所示：

 <a href='#' onclick="return confirm('Confirmation Message')">Link</a>

注意双引号内要插入单引号""

来自您的代码：

echo " <a href='deleteCom.php?id=$commentID' onclick='return confirm('Delete this comment?')'>Delete</a>";

应该是：

 echo "<a href=\"deleteCom.php?id={$commentID}\" onclick=\"return confirm('Delete this comment?')\">Delete</a>";

放入 <?php ?> 时不会出现 Confirm("Message")

Confirm("Message") does not appear when putting in <?php ?>

php

anchor

href

confirmation