jQuery警报和转义引号

Question

I have a php page on which I show a jQuery alert when a user adds products to their cart. 我有一个php页面，当用户将产品添加到购物车时，在该页面上显示jQuery警报。 The message displayed in the alert is a variable from a php page where all language elements are stored. 警报中显示的消息是来自存储所有语言元素的php页面中的变量。

$cartaddeditem='The product was added to your cart.\r\n You can view your <a href=\'cart.php?action=show\'>shopping cart</a> or click OK to continue shopping';

Then, on the page: 然后，在页面上：

<body onload="jAlert('success', '<?=$cartaddeditem?>', '<?=$minicart?>');" <? } >

The problem is that the alert fails to fire because of the quotes in the $cartaddeditem var and I'm getting an error in firebug that says: 问题是由于$ cartaddeditem var中的引号导致警报无法触发，并且在萤火虫中出现错误，提示：

Error: missing ) after argument list
Line: 1, Column: 22
Source Code:
jAlert('success', The product was added to your cart.\r\n You can view your <a href=\

How do I escape the quote in the message string for jQuery? 如何转义jQuery消息字符串中的引号？ I tried several escaping types with double and single quotes, one or two backslashes but nothing worked. 我尝试了几种带有双引号和单引号，一两个反斜杠的转义类型，但没有任何效果。

Answer 1

Try using double quotes to quote your HTML attributes. 尝试使用双引号将您的HTML属性引用。

$cartaddeditem = 'The product was added to your cart.\r\n You can view your <a href="cart.php?action=show">shopping cart</a> or click OK to continue shopping';

May I also suggest not adding onload attributes and using $(document).ready( instead? 我还可以建议不要添加onload属性，而是使用$(document).ready(吗？

$(function(){
    jAlert('success', '<?=$cartaddeditem?>', '<?=$minicart?>');
});

UPDATE : You can also use json_encode to make sure that quotes don't clash. 更新：您还可以使用json_encode来确保引号不会冲突。 json_encode works on strings too, it outputs aa string surrounded by double quotes (so don't add quotes around the parameter). json_encode适用于字符串，它输出一个字符串，并用双引号引起来（因此不要在参数周围添加引号）。

$(function(){
    jAlert('success', <?=json_encode($cartaddeditem)?>, <?=json_encode($minicart)?>);
});

Answer 2

Properly escape your PHP output: 正确地转义您的PHP输出：

<body onload="jAlert('success', 
  <?php echo json_encode($cartaddeditem); ?>, 
  <?php echo json_encode($minicart); ?>);" <? } >

Update 更新资料

Because it's written inside a tag attribute, the double quotes wouldn't work (thanks Rocket)! 因为它是在tag属性中编写的，所以双引号不起作用（感谢Rocket）！

So you'd either have to hope addslashes is enough: 因此，您要么希望加addslashes就足够了：

<body onload="jAlert('success', 
  '<?php echo addslashes($cartaddeditem); ?>', 
  '<?php echo addslashes($minicart); ?>');" <? } >

Or you do what Rocket described in his answer. 或者您按照火箭在他的回答中描述的做。

Update 2 更新2

Btw, you should change your PHP strings to double quotes so that \\r\\n gets evaluated as a newline: 顺便说一句，您应该将PHP字符串更改为双引号，以便\\r\\n被评估为换行符：

$cartaddeditem = "The product was added to your cart.\r\n You can view your <a href='cart.php?action=show'>shopping cart</a> or click OK to continue shopping";

jQuery警报和转义引号

问题描述

2 个解决方案

解决方案1
3 已采纳 2012-05-25 13:48:41

解决方案2
2 2012-05-25 13:51:18

jQuery警报和转义引号

问题描述

2 个解决方案

解决方案1 3 已采纳 2012-05-25 13:48:41

解决方案2 2 2012-05-25 13:51:18

解决方案1
3 已采纳 2012-05-25 13:48:41

解决方案2
2 2012-05-25 13:51:18