mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-28 02:50:27 +00:00
91 lines
1.7 KiB
Plaintext
91 lines
1.7 KiB
Plaintext
title: IteratorVariables
|
|
tags: ListWidget Variables
|
|
created: 20150106180000000
|
|
modified: 20150106180000000
|
|
|
|
The ListWidget exposes the following iterator variables during list processing:
|
|
|
|
; `<<iterator>>`
|
|
: set to the current index, e.g. `1`
|
|
; `<<iterator-even>>`
|
|
: set to `true` for an even index, otherwise `false`
|
|
; `<<iterator-last>>`
|
|
: set to `true` for last index, otherwise `false`
|
|
|
|
The ListWidget allows to declare an `iterator` attribute through which you can declare a custom iterator variable prefix:
|
|
|
|
```
|
|
<$list filter="[tag[foo]]" iterator="my-foo">
|
|
...
|
|
</$list>
|
|
```
|
|
|
|
!!Using Iterator Variables
|
|
|
|
You can use iterator variables with the RevealWidget to conditionally render output depending on the current index...
|
|
|
|
''only show for item at index 1, i.e. the first item''
|
|
|
|
```
|
|
<$reveal type=match default=1 text=<<my-foo>>>
|
|
...
|
|
</$reveal>
|
|
```
|
|
|
|
''show for all except first index''
|
|
|
|
```
|
|
<$reveal type=nomatch default=1 text=<<my-foo>>>
|
|
...
|
|
</$reveal>
|
|
```
|
|
|
|
''only show at even indexes''
|
|
|
|
```
|
|
<$reveal type=match default=true text=<<my-foo-even>>>
|
|
...
|
|
</$reveal>
|
|
```
|
|
|
|
''only show at uneven indexes''
|
|
|
|
```
|
|
<$reveal type=nomatch default=true text=<<my-foo-even>>>
|
|
...
|
|
</$reveal>
|
|
```
|
|
|
|
''only show for last index''
|
|
|
|
```
|
|
<$reveal type=match default=true text=<<my-foo-last>>>
|
|
...
|
|
</$reveal>
|
|
```
|
|
|
|
!! Live Example
|
|
|
|
```
|
|
<dl>
|
|
<$list filter="one two three" iterator=foo>
|
|
<dt><<currentTiddler>></dt>
|
|
<dd>`<<foo>>` = <<foo>></dd>
|
|
<dd>`<<foo-even>>` = <<foo-even>></dd>
|
|
<dd>`<<foo-last>>` = <<foo-last>></dd>
|
|
</$list>
|
|
</dl>
|
|
```
|
|
|
|
Displays as:
|
|
|
|
<<<
|
|
<dl>
|
|
<$list filter="one two three" iterator=foo>
|
|
<dt><<currentTiddler>></dt>
|
|
<dd>`<<foo>>` = <<foo>></dd>
|
|
<dd>`<<foo-even>>` = <<foo-even>></dd>
|
|
<dd>`<<foo-last>>` = <<foo-last>></dd>
|
|
</$list>
|
|
</dl>
|
|
<<< |