javascript 如何在 Coffeescript 中转义字符串插值
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How to escape string interpolation in Coffeescript
提问by Dan
I am trying to use this section of code from jQuery UI's tabs example and convert it to Coffeescript. I've run it through the awesome http://js2coffee.org/tool.
我正在尝试使用 jQuery UI 的选项卡示例中的这部分代码并将其转换为 Coffeescript。我已经通过很棒的http://js2coffee.org/工具运行了它。
var tabTitle = $( "#tab_title" ),
tabContent = $( "#tab_content" ),
tabTemplate = "<li><a href='#{href}'>#{label}</a> <span class='ui-icon ui-icon-close'>Remove Tab</span></li>",
tabCounter = 2;
The problem is that tabTemplate variable declaration. Coffeescript is trying to do string interpolation on it, as far as I can tell. I've tried escaping it with a slash, but that just resolves to using a slash in the converted js.
问题在于tabTemplate 变量声明。据我所知，Coffeescript 正在尝试对其进行字符串插值。我试过用斜线转义它，但这只是解决在转换后的 js 中使用斜线。
回答by nicolaskruchten
Use single-quotes to delimit your string: http://coffeescript.org/#strings
使用单引号分隔您的字符串：http: //coffeescript.org/#strings
If you want to use single-quotes within your string without manually escaping them you can use 3 single-quotes:
如果你想在你的字符串中使用单引号而不手动转义它们，你可以使用 3 个单引号：
x = '''
my string's ok with single quotes and #{doesn't interpolate}
'''
That said, this is HTML, so double-quotes are actually more common for attributes than single-quotes. Your string could therefore be written as:
也就是说，这是 HTML，所以双引号实际上比单引号更常见于属性。因此，您的字符串可以写为：
tabTemplate = '<li><a href="#{href}">#{label}</a> <span class="ui-icon ui-icon-close">Remove Tab</span></li>'
without any problems.
没有任何问题。
回答by matyr
Escaping with backslash does work:
使用反斜杠转义确实有效：
$ coffee -bce '"\#{a}"'
"\#{a}";
$ coffee -bce '"#\{a}"'
"#\{a}";
