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Web Development with Jade

You're reading from   Web Development with Jade Knowing Jade makes life simpler and more productive for web developers, and this book will teach you the language concisely and thoroughly using lots of practical examples and best practices for a solid grounding.

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Product type Paperback
Published in Mar 2014
Publisher
ISBN-13 9781783286355
Length 80 pages
Edition Edition
Tools
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Author (1):
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Sean Lang Sean Lang
Author Profile Icon Sean Lang
Sean Lang
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Toc

Interpolation everywhere!


Now, how about actually putting the data into something? For this, we can use interpolation:

Jade

HTML

p Jade says #{some_text}!
<p>Jade says Hello World!</p>

You just wrap the variable that you want to use in between #{ and }, and everything in the curly braces is evaluated as code, rather than text. This can be used pretty much anywhere that text can. But what if we don't just want to insert a variable, but want to do something more?

Jade

HTML

p 2 times 3 is #{2 * 3}
<p>2 times 3 is 6</p>

Yep, interpolation can contain full expressions too—pretty much any code you would want to put directly inline. But wait, there's more!

It works in attributes:

Jade

HTML

- base_url = "http://slang.cx"
a(href="#{base_url}/about")
<a href="http://slang.cx/about"></a>

It even works in text blocks:

Jade

HTML

- i = ['proident', 'dreamcatcher', 'ennui', 'Tonx']

pre
   | #{i[0]} #{i[1]}
   | #{i[2]} #{i[3]}
<pre>proident dreamcatcher
ennui Tonx...
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