When working with a form containing 40-50 textareas, the default option md-no-autogrow can lead to severe performance issues.
The function causing this issue can be found at this link.
Disabling md-no-autogrow means losing the resize functionalities. What alternatives could solve this problem?
Here is a potential solution:
<textarea
ng-model="$ctrl.model"
ng-keydown="$ctrl.onKeyDown($event)"
ng-keyup="$ctrl.onKeyUp($event)"
md-no-autogrow="true"
>
onKeyUp(e) {
if (e.key === 'Enter') {
return;
}
let element = e.target;
element.style.height = 'auto';
if (element.scrollHeight > 54) {
element.style.height = element.scrollHeight + 'px';
}
}
onKeyDown(e) {
if (e.key !== 'Enter') {
return;
}
let element = e.target;
let numberOfLines = element.value.split('\n').length;
if (numberOfLines >= 2) {
element.style.height = 'auto';
element.style.height = (element.scrollHeight + 26) + 'px';
}
}
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