更改指令上的文本框
问题描述:
在Angular2的每个输入上,jQuery更改事件的等效项是什么? 示例:
What is the equivalent for jQuery change event on every input in Angular2? Example:
$("input").on('change', function() {
console.log("*");
});
答
您可以使用Igor所说的伪指令"来处理它
You can handle it using Directive as said by Igor as below
-
使用
create a directive using
import { Directive, HostListener, Renderer, ElementRef } from '@angular/core';
@Directive({
selector: '[change]'
})
export class ChangeDirective{
constructor(
private renderer: Renderer,
private el: ElementRef
){}
@HostListener('keyup') onKeyUp() {
console.log('some thing key upped')
}
}
将其导入main.ts
Import it to the main.ts
添加到模块的声明中
LIVE DEMO