样式不适用于子组件 [英] Styling not applying to child component

问题描述

我正在尝试将样式应用于子组件标签，但是我不能这样做.

我有带有锚标记的子组件.

即使我在父组件中具有锚标签的样式，也没有应用.有什么解决方案?

工作代码: http://plnkr.co/edit/CJCpV4ZbG7hdxT2AeSmt?p=预览

 <a href="https://www.google.com">Google</a>

在父组件中，我正在使用子组件，并为此子组件应用样式.

HTML代码:

<div class="container">
  <div class="test">
    <testapp></testapp>
  </div>
</div>

Css代码:

.container{
  font-family:sans-serif;
  font-size:18px;
  border: 1px solid black;
}
.test{
  width:50%;
  background-color:#f0f5f5;
}

.container:hover .test{
  background-color:#e6ffe6;
}
.container:hover .test:hover{
  background-color:#ffffe6;
}
.container .test a {
    color:   red ;
}
.container .test a:hover {
    color:green;
}

解决方案

这是因为默认情况下组件具有视图封装(影子dom).要禁用此行为，可以利用encapsulation属性，如下所述:

import {Component, ViewEncapsulation} from '@angular/core';
import {TestApp} from 'testapp.component.ts';
@Component({
  selector:'test-component',
  styleUrls: ['test.component.css'],
  templateUrl: './test.component.html',
  directives:[TestApp],
  encapsulation: ViewEncapsulation.None // <------
})
export class TestComponent{

}

请参阅以下示例: http://plnkr.co/edit/qkhkfxPjgKus4WM9j9qg?p=preview ./p>

I'm trying to apply styling to a child component tag, but I can't do that.

I have child component with anchor tag.

Even though i have styling for anchor tag in the parent component, it's not applying. What's the solution for it?

Working code: http://plnkr.co/edit/CJCpV4ZbG7hdxT2AeSmt?p=preview

 <a href="https://www.google.com">Google</a>

In the parent component i'm using the child component and applying styling for this child component.

Html code:

<div class="container">
  <div class="test">
    <testapp></testapp>
  </div>
</div>

Css code:

.container{
  font-family:sans-serif;
  font-size:18px;
  border: 1px solid black;
}
.test{
  width:50%;
  background-color:#f0f5f5;
}

.container:hover .test{
  background-color:#e6ffe6;
}
.container:hover .test:hover{
  background-color:#ffffe6;
}
.container .test a {
    color:   red ;
}
.container .test a:hover {
    color:green;
}

解决方案

It's because by default components have view encapsulation (shadow dom). To disable this behavior, you can leverage the encapsulation attribute, as described below:

import {Component, ViewEncapsulation} from '@angular/core';
import {TestApp} from 'testapp.component.ts';
@Component({
  selector:'test-component',
  styleUrls: ['test.component.css'],
  templateUrl: './test.component.html',
  directives:[TestApp],
  encapsulation: ViewEncapsulation.None // <------
})
export class TestComponent{

}

See this plunkr: http://plnkr.co/edit/qkhkfxPjgKus4WM9j9qg?p=preview.

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