每次按键时的 Angular 2 更改事件 [英] Angular 2 change event on every keypress

问题描述

只有在输入的焦点发生变化后才会调用 change 事件.我怎样才能使事件在每次按键时触发?

The change event is only called after the focus of the input has changed. How can I make it so that the event fires on every keypress?

<input type="text" [(ngModel)]="mymodel" (change)="valuechange($event)" />
{{mymodel}}

顺便说一下，每次按键都会改变第二个绑定.

The second binding changes on every keypress btw.

推荐答案

我刚刚使用了事件输入，效果很好，如下所示:

I just used the event input and it worked fine as follows:

在 .html 文件中:

in .html file :

<input type="text" class="form-control" (input)="onSearchChange($event.target.value)">

在 .ts 文件中:

onSearchChange(searchValue: string): void {  
  console.log(searchValue);
}

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