Detailed changes:
- remove `UNINITIALIZED`, initialize change detection fields with `undefined`.
* we use `view.numberOfChecks === 0` now everywhere
as indicator whether we are in the first change detection cycle
(previously we used this only in a couple of places).
* we keep the initialization itself as change detection get slower without it.
- remove passing around `throwOnChange` in various generated calls,
and store it on the view as property instead.
- change generated code for bindings to DOM elements as follows:
Before:
```
var currVal_10 = self.context.bgColor;
if (jit_checkBinding15(self.throwOnChange,self._expr_10,currVal_10)) {
self.renderer.setElementStyle(self._el_0,'backgroundColor',((self.viewUtils.sanitizer.sanitize(jit_21,currVal_10) == null)? null: self.viewUtils.sanitizer.sanitize(jit_21,currVal_10).toString()));
self._expr_10 = currVal_10;
}
var currVal_11 = jit_inlineInterpolate16(1,' ',self.context.data.value,' ');
if (jit_checkBinding15(self.throwOnChange,self._expr_11,currVal_11)) {
self.renderer.setText(self._text_1,currVal_11);
self._expr_11 = currVal_11;
}
```,
After:
```
var currVal_10 = self.context.bgColor;
jit_checkRenderStyle14(self,self._el_0,'backgroundColor',null,self._expr_10,self._expr_10=currVal_10,false,jit_21);
var currVal_11 = jit_inlineInterpolate15(1,' ',self.context.data.value,' ');
jit_checkRenderText16(self,self._text_1,self._expr_11,self._expr_11=currVal_11,false);
```
Performance impact:
- None seen (checked against internal latency lab)
Part of #13651
If you bound an array to select[multiple] via ngModel and subsequently
changed the options to select from, the UI would drop any selections
made since by the user. This was due to
SelectMultipleControlValueAccessor not keeping a reference to the new
model arrays it generated when users interacted with the select control.
Update code to keep the reference.
Closes#12527Closes#12654
When an invalid model value (eg empty string) was preset ngModel on
select[multiple] would throw an error, which is inconsistent with how it
works on other user input elements. Setting the model value to null or
undefined would also have no effect on what was already selected in the
UI. Fix this by clearing selected options when model set to null,
undefined or a type other than Array.
Closes#11926
The first code example for the reset function was invalid as it has a semi-colon instead of a colon for the last property in the json object. Change the semi-colon to a colon.
Closes https://github.com/angular/angular/issues/12531
* feat(forms): ngSubmit event exposes $event from original submit event as local variable
Modify NgForm directive and FormGroup directive to expose the original submit event as $event in the ngSubmit event. Modify docs to reflect changes.
This resolves#10920.
* refactor: code cleanup
Dzmitry Shylovich
Tobias Bosch
Marc Laval
gary-b
Miško Hevery
Victor Savkin
Alex Eagle
Craig Hutchison
Victor Berchet
Joao Dias
Justin James
shaul almog
Pawel Kozlowski
Florian Kinder
Cédric Exbrayat
Connor Wyatt
Alex Eagle
Chuck Jazdzewski
Kara Erickson
Kara