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doc(pipes): copyedit and remove Jade block used for Data (#3306) 

- JS event --> DOM event
- The Jade block isn't used by Dart anymore.
- In `learning-angular.jade`, removed trailing whitespace.
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Patrice Chalin 2017-02-25 12:20:26 -08:00 committed by Jules Kremer
parent fdc11391dd
commit a237911e7a
2 changed files with 8 additions and 11 deletions
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public/docs/ts/latest/guide/pipes.jade
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@ -197,7 +197,7 @@ a#change-detection
:marked :marked
## Pipes and change detection ## Pipes and change detection
Angular looks for changes to data-bound values through a *change detection* process that runs after every JavaScript event: Angular looks for changes to data-bound values through a *change detection* process that runs after every DOM event:
every keystroke, mouse move, timer tick, and server response. This could be expensive. every keystroke, mouse move, timer tick, and server response. This could be expensive.
Angular strives to lower the cost whenever possible and appropriate. Angular strives to lower the cost whenever possible and appropriate.
@ -284,13 +284,10 @@ figure.image-display
### Pure pipes ### Pure pipes
block pure-change Angular executes a *pure pipe* only when it detects a *pure change* to the input value.
:marked A pure change is either a change to a primitive input value (`String`, `Number`, `Boolean`, `Symbol`)
Angular executes a *pure pipe* only when it detects a *pure change* to the input value. or a changed object reference (`Date`, `Array`, `Function`, `Object`).
A pure change is either a change to a primitive input value (`String`, `Number`, `Boolean`, `Symbol`)
or a changed object reference (`Date`, `Array`, `Function`, `Object`).
:marked
Angular ignores changes within (composite) objects. Angular ignores changes within (composite) objects.
It won't call a pure pipe if you change an input month, add to an input #{_array}, or update an input object property. It won't call a pure pipe if you change an input month, add to an input #{_array}, or update an input object property.