## 问题 你想创建一个字符串，包含字符串，可以代表一个CoffeeScript变量。 ## 方法 使用CoffeeScript类似Ruby的字符插值法，来替代JavaScript字符串拼接。 字符串插值： ~~~ muppet = "Beeker" favorite = "My favorite muppet is #{muppet}!" # => "My favorite muppet is Beeker!" ~~~ ~~~ square = (x) -> x * x message = "The square of 7 is #{square 7}." # => "The square of 7 is 49." ~~~ ## 讨论 CoffeeScript的字符串插值与Ruby的惯用法相似。绝大多数的表达式都可以放到插值语法`#{...}`中。 CoffeeScript允许在插值中使用多个表达式，这可能会有副作用，有时候是危险的信号。只有最后一个值会被返回。 ~~~ # You can do this, but don't. YOU WILL GO MAD. square = (x) -> x * x muppet = "Beeker" message = "The square of 10 is #{muppet='Animal'; square 10}. Oh, and your favorite muppet is now #{muppet}." # => "The square of 10 is 100\. Oh, and your favorite muppet is now Animal." ~~~