Question

我正在尝试制作类似于角形材质的卡片组件。一切都工作得很好，除了我在每张卡上的[title]依赖注入都有问题。

这是我的代码：

TitleDirective

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

@Directive({
    selector: '[title]'
})

export class TitleDirective {
    private _defaultTitle = '';

    @Input('title') title: string;

    @HostListener('mouseenter') onMouseEnter() {
        console.log('hhh');
        console.log(this.title);
    }
}

CardItemComponent

import { Component } from '@angular/core';

import { TitleDirective } from '../title.directive';

@Component({
    selector: 'card-item',
    templateUrl: 'app/directive/cards/card-item.component.html',
    directives: [
        TitleDirective
    ]
})

export class CardItemComponent { }

HTML页面

<mc-cards>
    <mc-card>
        <mc-card-header>
            <mc-button>LEFT</mc-button>
            <span flex></span>
            <h1>Title 1</h1>
            <span flex></span>
            <mc-button>RIGHT</mc-button>
        </mc-card-header>
        <mc-card-body>
            <mc-card-item [title]="Hello">
                    <p>
                        Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.

                        The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham.
                    </p>
            </mc-card-item>
        </mc-card-body>
    </mc-card>
</mc-cards>

我希望每个卡片项能够在

中设置标签/卡片的标题

Answer 1

应该是：

[title]="'Hello'"
or
title="Hello"

AngularJS 2依赖注入子子组件

1 个答案: