如何在JavaScript中转义单引号（'）？ [英] How do I escape a single quote ( ' ) in JavaScript?

问题描述

更新：
我想给这个问题提供一个更新的答案。首先，让我说明你是否试图完成我在下面的内容，我建议你通过添加事件监听器。我强烈建议您为项目使用 jQuery ，并使用它们的语法管理使用DOM的事件侦听器。

问题

好吧，我基本上是这样做的：

  document.getElementById（something ）.innerHTML =< img src ='something'onmouseover ='change（\'ex1 \'）'/>; 
  

我不想用双引号（）放置\'，我只想要一个单引号，所以我试图在它被使用时不会使它变成一个双引号，我试图在最终结果中达到这个目的。

 < img src =somethingonmouseover =change（'ex1'）/> 
  

Escaping不适用于我。

我标记的答案正常，但更清洁（更专业的方式IMO） loganfsmyth的答案。

解决方案

你应该总是考虑浏览器到底会看到什么，在这种情况下，它会看到：

 < img src ='something'onmouseover ='change（'ex1'）'/> 
  

换句话说，onmouseover属性就是 change（，还有另一个叫做 ex1'）'的属性没有价值。

事实是，HTML不使用 \ 作为转义字符。但它确实分别识别& quot; 和& $ 作为转义引号和撇号。

有了这些知识，使用这个：

  document.getElementById（something ）.innerHTML =< img src ='something'onmouseover ='change（& quot; ex1& quot;）'/>; 
  

...也就是说，您可以使用JavaScript引号：

  document.getElementById（something）。innerHTML =< img src ='something'onmouseover ='change（\ex1\） '/>; 
  

UPDATE: I want to give an updated answer to this question. First, let me state if you're attempting to accomplish what I have below, I recommend that you manage events by adding event listeners instead. I highly recommend that you utilize jQuery for your project and use their syntax to manage event listeners over using DOM.

QUESTION

Okay, I am basically doing this:

document.getElementById("something").innerHTML = "<img src='something' onmouseover='change(\'ex1\')' />";

I don't want double quotes (") where I put the \'. I only want a single quote, so I am trying to not make it put a double when it is used. I am trying to reach this in the final outcome.

<img src="something" onmouseover="change('ex1')" />

Escaping isn't working for me.

My marked answer works fine, however, the cleaner (and more professional-looking way, IMO) is loganfsmyth's answer.

解决方案

You should always consider what the browser will see by the end. In this case, it will see this:

<img src='something' onmouseover='change(' ex1')' />

In other words, the "onmouseover" attribute is just change(, and there's another "attribute" called ex1')' with no value.

The truth is, HTML does not use \ for an escape character. But it does recognise " and ' as escaped quote and apostrophe, respectively.

Armed with this knowledge, use this:

document.getElementById("something").innerHTML = "<img src='something' onmouseover='change(&quot;ex1&quot;)' />";

... That being said, you could just use JavaScript quotes:

document.getElementById("something").innerHTML = "<img src='something' onmouseover='change(\"ex1\")' />";

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