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fix(material/input): error for some input types on iOS #22749

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Merged
merged 1 commit into from
May 25, 2021
Merged

fix(material/input): error for some input types on iOS #22749

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11 changes: 9 additions & 2 deletions src/material/input/input.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -269,8 +269,15 @@ export class MatInput extends _MatInputMixinBase implements MatFormFieldControl<
if (_platform.IOS) {
ngZone.runOutsideAngular(() => {
_elementRef.nativeElement.addEventListener('keyup', (event: Event) => {
let el = event.target as HTMLInputElement;
if (!el.value && !el.selectionStart && !el.selectionEnd) {
const el = event.target as HTMLInputElement;

// Note: We specifically check for 0, rather than `!el.selectionStart`, because the two
// indicate different things. If the value is 0, it means that the caret is at the start
// of the input, whereas a value of `null` means that the input doesn't support
// manipulating the selection range. Inputs that don't support setting the selection range
// will throw an error so we want to avoid calling `setSelectionRange` on them. See:
// https://html.spec.whatwg.org/multipage/input.html#do-not-apply
if (!el.value && el.selectionStart === 0 && el.selectionEnd === 0) {
// Note: Just setting `0, 0` doesn't fix the issue. Setting
// `1, 1` fixes it for the first time that you type text and
// then hold delete. Toggling to `1, 1` and then back to
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