Using JS functions with directives
On top of the predefined value assignment directive and iteration directive, you can as well use JS functions for more advanced needs.
var directive = {'tr@class':function(a){ ... }}
It means:
The function must return a value.
This value will be assigned to the CLASS attribute of the TR tag.
Argument of the function
The argument of the function is an object with the following properties:
- context : This is the full JSON that was passed for transformation
- item* : the current loop item
- items* : all the items of the loop
- pos* : the current position in the loop. An integer when iterating an array, a property name iterating on a collection
The last 3 properties(*) are only present when the directive is inside a loop.
Note: If you debug a function, you'll notice there are other properties in the argument object.
They are all for backward compatibilities or internal use.
You shouldn't use them in your pages.
