什么是Textarea中的Angular4“Change”事件触发器指令

Question

Here is one of the versions that I tried INSIDE TEXTAREA: (change)="dosomething($event)"

and it's not doing anything. What is the directive for "change"?

Answer 1

You should be using ngModelChange

   <textarea cols="25" [ngModel]="data" (ngModelChange)="doSomething($event)"></textarea>

LIVE DEMO

Update:

(change) event will work in textarea but it is triggered on blur and text changed inside the text area

DEMO

Answer 2

（改变）对我来说也不起作用，尝试（输入）它完美地工作：

<textarea [(ngModel)]="mytext" (input)="autoGrow($event)"></textarea>