Angular5 step instructions for adding style class to component tags

This time I will bring you the step-by-step instructions for adding style classes to component tags in Angular5. What are theprecautionsfor adding style classes to component tags in Angular5? The following is a practical case, let's take a look.

There are two ways to add styles to the tags of the component itself in Angular 5:

Method 1: Use the host attribute of @Component

@Component({ selector : 'myComponent', host : { '[style.color]' : "'red'", '[style.background-color]' : 'backgroundColor' } }) class MyComponent { backgroundColor: string; constructor() { this.backgroundColor = 'blue'; } }

In Adding attributes in the host configuration is equivalent to the usage of binding attributes on labels.

Set style:

1. '[style.color]': "'red'": Note that there is a single quotation mark inside the double quotation marks of the red value.

2. '[style.background-color]':'backgroundColor': This refers to the variable backgroundColor in the component.

The advantage of this method is that you can use component variables in styles.

Set class:

@Component({ selector : 'myComponent', host : { '[class.myclass]' : 'showMyClass' } }) class MyComponent { showMyClass = false; constructor() { } toggleMyClass() { this.showMyClass = !this.showMyClass; } }

Method 2: Use: host selector in the style

@Component({ selector : 'myComponent', styles : [` :host { color: red; background-color: blue; } `] }) class MyComponent {}

I believe you have mastered the method after reading the case in this article , for more exciting content, please pay attention to other related articles on the php Chinese website!

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Detailed explanation of using React Router v4

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