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dalgard:jade 0.5.4

This package is a fork of mquandalle:jade and will be kept in sync with the original.

Hopefully, the two packages can be merged at some point.

Install

meteor add dalgard:jade

Rationale

The latest development on the mquandalle:jade package was on 29 April 2015. Judging from the lack of responsiveness in the issues forum, it looks like the project have been set on stand-by.

Until development is resumed, this package may improve things a bit in some areas (especially in relation to the dalgard:viewmodel package).

A live version of /examples/viewmodel can be found here.

Changes

Although only a few lines of code have been added to the package, they enable some useful features.

Like the existing syntax, the new syntax comes in two variants – space separated or with parentheses. I recommend using the parenthesized version, since this is the only available style for attribute helpers.

Note: The parenthesis format for helper arguments may also be used after includes, components, and built-ins (if helper(args)), as long as they don't span multiple lines.

Arguments in interpolation

Positional and keyword arguments have been missing from Jade's interpolation syntax, but may now be used in one of the two mentioned forms, alleviating the need for Blaze syntax:

body
  // Space separated version – similar to Blaze
  | Hello #{person name prefix='Lord'}

  // Parenthesis version – similar to attribute helpers
  | Hello #{person(name prefix='Lord')}

Arguments in attributes

Positional and keyword arguments can be passed to helpers that are used in attributes:

input(type='text' placeholder=person(name prefix='Lord'))

Dollar sign attributes

Dynamic attributes were added to the Meteor version of Jade using the $dyn syntax:

input(type='text' $dyn=bind('value: value'))

This package introduces the concept of using a dollar sign ($) in front of an attribute name as a shorthand for designating a dynamic attribute helper. These two examples are equivalent:

div($attr)
<div {{attr}}></div>

If a value is set on the attribute, it becomes the first positional argument of the helper. Consequently, the $dyn example may be rewritten in two ways:

input(type='text' $bind='value: value')

Or, when more arguments are needed:

input(type='text' $bind('value: value' throttle=500))

@index

The special @index variable inside each loops may now be used in interpolation or as an argument to a helper.

The only limitation is direct attribute assignment, which should be written as attr='#{@index}', not as attr=@index.

Compatibility

So far, I these improvements are fully backwards compatible, since the added syntax previously resulted in errors (with the exception of $dyn, which this package leaves untouched).

History

  • 0.5.4  –  Fixed missing @index variable and Uncaught TypeError: Cannot read property 'nodeType' of undefined
  • 0.5.3  –  Added tests and fixed corner case with parenthesis syntax
  • 0.5.2  –  Bug fix: Broken multiline component arguments.
  • 0.5.1  –  Extended parenthesis syntax to includes, components, and built-ins.
  • 0.5.0  –  Arguments for attributes and interpolation.