什么字符代表文本区域中的新行 [英] What character represents a new line in a text area

问题描述

我喜欢将输入到文本区的新行转换为[逗号]，所以输出可以在一行代表，我的问题...

目前，从谷歌浏览器发送，当我查看该值时，我发现它对新行使用 \r\\\
。如果我替换 \r\\\
我知道它适用于Windows 7上的chrome，但其他平台又如何，其他浏览器会插入哪些变体作为文本区域内的新行？

解决方案

通过HTML规范，浏览器需要规范用户输入中的换行符LF LF \r\\\
），我不认为任何浏览器都会出错。参考：条款17.13.4 表单内容类型在HTML 4.01规范中。

在HTML5草案中，情况更加复杂，因为它们也处理浏览器内的流程，而不仅仅是发送到提交表单时的服务器端表单处理程序。根据他们（和浏览器的做法）， textarea 元素值存在三种变体：

1. 由用户输入的原始值，非标准化;它可能包含CR，LF或CR LF对;


2. 称为API值的内部值，其中换行符标准化为LF（仅）; 根据互联网约定，被归一化为CR LF对。

Just quick one, but want to make sure I'm catching cross platform variations.

I like to convert new lines entered into a text area into a [comma], so that the output can be represented on a single line, my question...

Currently, sending from google chrome, when I view the value, I find it uses \r\n for new lines. If I replace \r\n I know it will work for chrome on windows 7, but what about other platforms, are there variations on what other browsers will insert as a new line inside a text area?

解决方案

By HTML specifications, browsers are required to canonicalize line breaks in user input to CR LF (\r\n), and I don’t think any browser gets this wrong. Reference: clause 17.13.4 Form content types in the HTML 4.01 spec.

In HTML5 drafts, the situation is more complicated, since they also deal with the processes inside a browser, not just the data that gets sent to a server-side form handler when the form is submitted. According to them (and browser practice), the textarea element value exists in three variants:

1. the raw value as entered by the user, unnormalized; it may contain CR, LF, or CR LF pair;
2. the internal value, called "API value", where line breaks are normalized to LF (only);
3. the submission value, where line breaks are normalized to CR LF pairs, as per Internet conventions.

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