角度6自定义元素指令 [英] angular 6 custom element directives

问题描述

如何在角度6中创建元素指令?我看到了如何创建属性指令，但是如果要创建自定义元素怎么办?

How can one create an element directive in angular 6? I see how to create an attribute directive, but what if I want to create a custom element?

@Directive({
  selector: '[appCards]'//you can't do something like -- element: name
})
export class CardsDirective {

    constructor(el: ElementRef) { 
}
}

推荐答案

我尝试使用Selector创建指令，并且该指令有效. Angular非常强大.

I tried creating a Directive with Selector as and it works. Angular is so powerful.

import {Directive, ElementRef, Input} from '@angular/core';

@Directive({
  selector: '<appCards>'
})
export class CardsDirective {

    @Input() label;
    constructor(el: ElementRef) { 
      console.log('it called');
    }

    ngOnInit(){
      console.log(this.label);
    }
}

模板:

<appCards label="change"></appCards>

https://stackblitz.com/edit/angular-av5x68

这篇关于角度6自定义元素指令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！